<B>Arapaho, </B>noun, pl. <B>-ho</B> or <B>-hos.</B><DL COMPACT><DD><B> 1. </B>a member of a tribe of North American Indians, originally nomadic, that lived in Colorado and are now settled on reservations in Wyoming and Oklahoma. The Arapaho are Algonkians. <DD><B> 2. </B>the language of this tribe. </DL>
<A NAME="arapahoe">
<B>Arapahoe, </B>noun, pl. <B>-hoe</B> or <B>-hoes.</B> =Arapaho.</DL>
<A NAME="arapaima">
<B>arapaima, </B>noun.<DL COMPACT><DD> a large, edible, freshwater South American fish, sometimes growing to a length of 15 feet. </DL>
<A NAME="araroba">
<B>araroba, </B>noun.<DL COMPACT><DD><B> 1. </B>a bitter powder used in medicines for skin diseases; Goa powder. <DD><B> 2. </B>the Brazilian tree from which this powder is obtained, having a distinctive pattern of stripes in its wood. </DL>
<A NAME="arastra">
<B>arastra, </B>noun. =arrastra.</DL>
<A NAME="araucan">
<B>Araucan, </B>noun.<DL COMPACT><DD> the language of the Araucanians. </DL>
<A NAME="araucana">
<B>Araucana, </B>noun.<DL COMPACT><DD> a type of chicken in South America that produces blue-shelled eggs. </DL>
<A NAME="araucanian">
<B>Araucanian, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> <B>1. </B>a member of a group of South American Indian tribes in Chile and Argentina, whose native dialects make up an independent language family. <DD><B> 2. </B>this language family. <DD><I>adj. </I> of or designating the Araucanians or Araucanian. </DL>
<A NAME="araucaria">
<B>araucaria, </B>noun.<DL COMPACT><DD> any tree of a genus related to the pine family and native to South America, Australia, and Polynesia, such as the monkey puzzle. One species, the Norfolk Island pine, is grown in dwarf form as a house plant. </DL>
<A NAME="araucarian">
<B>araucarian, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> of or belonging to an araucaria or to the genus. <DD><I>noun </I> a species of this or a closely related genus. </DL>
<A NAME="aravir">
<B>a ravir,</B><DL COMPACT><DD> (French.) with charm; ravishingly. <BR> <I>Ex. ... who sing and mime and play the fool a ravir (Punch).</I> </DL>
<A NAME="arawak">
<B>Arawak, </B>noun.<DL COMPACT><DD><B> 1. </B>a member of a South American Indian tribe now living mostly in Brazil. The Arawaks belong to the Arawakan language family. They tend to shortness of stature and lack the fiercely warlike tradition of the Caribs and some other tribes of the same general area, supporting themselves chiefly by agriculture. <DD><B> 2. </B>the language or language family of this tribe. </DL>
<A NAME="arawakan">
<B>Arawakan, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of or denoting the most extensive known family of American Indian languages, now chiefly found in northern South America, but formerly spoken also throughout the West Indies and in a small part of southern Florida. <DD><B> 2. </B>of or having to do with the Arawaks. <DD><I>noun </I> <B>1. </B>an Arawak. <DD><B> 2. </B>the Arawakan language family. </DL>
<A NAME="arb">
<B>arb, </B>noun.<DL COMPACT><DD> (U.S. Informal.) an arbitrager. <BR> <I>Ex. The arbs sometimes play a role in a defensive restructuring when the company wants to get its share price up (Economist).</I> </DL>
<A NAME="arbalest">
<B>arbalest</B> or <B>arbalist, </B>noun.<DL COMPACT><DD> a powerful medieval crossbow with a steel bow, bent by a special attachment and shooting arrows, balls, or stones. Also, <B>arblast.</B> </DL>
<A NAME="arbalester">
<B>arbalester, </B>noun.<DL COMPACT><DD> a soldier armed with an arbalest; crossbowman. </DL>
<A NAME="arbiter">
<B>arbiter, </B>noun.<DL COMPACT><DD><B> 1. </B>a person with full power to judge or decide. <BR> <I>Ex. Dress designers are arbiters of ladies' fashion.</I> <DD><B> 2. </B>a person chosen to decide or settle a dispute; arbitrator. (SYN) umpire, judge. </DL>
<A NAME="arbiterelegantiarum">
<B>arbiter elegantiarum,</B><DL COMPACT><DD> (Latin.) arbiter of elegances; authority on good taste. According to Tacitus, this was the honorary post of the writer Gaius Petronius at the court of Nero. <BR> <I>Ex. The Museum's most effective intervention as an arbiter elegantiarum has been in architecture and in home furnishings (New Yorker).</I> </DL>
<A NAME="arbitrable">
<B>arbitrable, </B>adjective.<DL COMPACT><DD> that can be decided by arbitration; subject to arbitration. <BR> <I>Ex. Among arbitrable issues is the question of whether sailors who quit work voluntarily should receive payments (Wall Street Journal).</I> </DL>
<A NAME="arbitrage">
<B>arbitrage, </B>noun, verb, <B>-traged,</B> <B>-traging.</B><DL COMPACT><DD><I>noun </I> <B>1a. </B>the calculation of the prices of a given stock, bond, or the like, in different places at the same time with allowance for exchange rates. <DD><B> b. </B>the buying and selling of stocks, bonds, or the like, at the same time in different markets, taking advantage of differences of price between markets. <DD><B> 2. </B>(Archaic.) arbitration. <DD><I>v.i. </I> to engage in arbitrage. </DL>
<A NAME="arbitrager">
<B>arbitrager, </B>noun.<DL COMPACT><DD> a banker or a broker in arbitrage operations. </DL>
<A NAME="arbitrageur">
<B>arbitrageur, </B>noun. =arbitrager.</DL>
<A NAME="arbitral">
<B>arbitral, </B>adjective.<DL COMPACT><DD> of arbiters or arbitration. <BR> <I>Ex. an arbitral body, an arbitral decision.</I> </DL>
<A NAME="arbitrament">
<B>arbitrament, </B>noun.<DL COMPACT><DD><B> 1. </B>the decision or award made by an arbiter or arbitrator. <DD><B> 2. </B>the power or right to judge and decide; power of absolute and final decision. <DD><B> 3. </B>the act of deciding a dispute as an arbiter or arbitrator. </DL>
<A NAME="arbitrary">
<B>arbitrary, </B>adjective, noun, pl. <B>-traries.</B><DL COMPACT><DD><I>adj. </I> <B>1. </B>based on one's own wishes, notions, or will; not going by any rule or law. <BR> <I>Ex. A good judge tries to be fair and does not make arbitrary decisions or rules.</I> <DD><B> 2. </B>capricious; uncertain. <BR> <I>Ex. an arbitrary character.</I> (SYN) unreasonable, changeful. <DD><B> 3. </B>using or abusing unlimited power; tyrannical. <BR> <I>Ex. an arbitrary king.</I> (SYN) despotic. <DD><B> 4. </B>fixed or determined by chance; not regulated by fixed rule or law; that can be determined as the occasion arises. <BR> <I>Ex. an arbitrary name, an arbitrary serial number.</I> (SYN) discretionary. <DD><I>noun </I> a charge added to a regular rate or wage, for special or extra service. <BR> <I>Ex. Firemen were subject ... to the collective agreement in regard to manning of diesel locomotives [and] payment of arbitraries (Economist).</I> adv. <B>arbitrarily.</B> noun <B>arbitrariness.</B> </DL>
<A NAME="arbitrate">
<B>arbitrate, </B>verb, <B>-trated,</B> <B>-trating.</B><DL COMPACT><DD><I>v.i. </I> <B>1. </B>to give a decision in a dispute; act as arbitrator; mediate. <BR> <I>Ex. The teacher arbitrated between the two boys in their quarrel. The governor offered to arbitrate between the city and the county in their dispute.</I> (SYN) judge. <DD><B> 2. </B>to submit a matter to arbitration. <DD><I>v.t. </I> <B>1. </B>to submit to arbitration; settle by arbitration. <BR> <I>Ex. The two nations finally agreed to arbitrate their dispute, and war was avoided.</I> <DD><B> 2. </B>to give an expert or official decision in regard to; decide or determine. (SYN) adjudicate. </DL>
<A NAME="arbitration">
<B>arbitration, </B>noun.<DL COMPACT><DD> the settlement of a dispute by the decision of somebody chosen to be the judge, umpire, or arbiter. <BR> <I>Ex. to submit the points in a dispute to arbitration. The strike was settled by arbitration. Arbitration differs from mediation in that a definite decision on the issue is handed down by the individuals who serve as arbitrators, and the decision is regarded as binding on the contestants (Ogburn and Nimkoff).</I> </DL>
<A NAME="arbitrational">
<B>arbitrational, </B>adjective.<DL COMPACT><DD><B> 1. </B>of or involving arbitration. <DD><B> 2. </B>resulting from arbitration. </DL>
<A NAME="arbitrative">
<B>arbitrative, </B>adjective.<DL COMPACT><DD> having power to arbitrate; done by arbitration. </DL>
<A NAME="arbitrator">
<B>arbitrator, </B>noun.<DL COMPACT><DD><B> 1. </B>a person chosen to decide or settle a dispute. <BR> <I>Ex. A mediator seeks to bring the two sides in a labor dispute together. An arbitrator hears evidence and makes specific recommendations for settlement (Wall Street Journal).</I> (SYN) umpire, judge. <DD><B> 2. </B>a person with full power to judge or decide; arbiter. noun <B>arbitratorship.</B> </DL>
<A NAME="arbitress">
<B>arbitress, </B>noun.<DL COMPACT><DD> a woman arbiter or arbitrator. </DL>
<A NAME="arboloco">
<B>arboloco, </B>noun.<DL COMPACT><DD> a South and Central American composite tree, whose hard wood is used for billiard cues. </DL>
<A NAME="arbor">
<B>arbor</B> (1), noun.<DL COMPACT><DD><B> 1a. </B>a shady place formed by trees or shrubs or often by vines growing on latticework. <DD><B> b. </B>the latticework itself. <DD><B> 2. </B>(Obsolete.) <DD><B> a. </B>a plot of ground covered with grass or turf. <DD><B> b. </B>a flower garden. <DD><B> c. </B>an orchard. Also, (British,) <B>arbour.</B> </DL>
<A NAME="arbor">
<B>arbor</B> (2), noun.<DL COMPACT><DD><B> 1. </B>the main shaft or axle of a machine which transmits mechanical force to other moving parts. <DD><B> 2. </B>the axle or spindle on which a wheel revolves, especially in clocks and watches. <DD><B> 3. </B>in the machining of metal and other materials: <DD><B> a. </B>a shaft that holds the cutting tool or tools. <DD><B> b. </B>a shaft or bar (mandrel) forced into an object to support it while it is turned. <DD><B> 4. </B>a cork cylinder used to build up a bait-casting reel so that the spool will be half filled with an older line. </DL>
<A NAME="arbor">
<B>arbor</B> (3), noun, pl. <B>arbores.</B><DL COMPACT><DD> a tree (used chiefly as part of various names in botany). </DL>
<B>Arbor Day,</B><DL COMPACT><DD> a day observed by planting trees in many states of the United States and provinces of Canada, in New Zealand, and in parts of Australia. The date varies in different places. </DL>
<A NAME="arboreal">
<B>arboreal, </B>adjective.<DL COMPACT><DD><B> 1. </B>living in or among trees. A squirrel is an arboreal animal. <DD><B> 2. </B>of or like trees. adv. <B>arboreally.</B> </DL>
<A NAME="arbored">
<B>arbored, </B>adjective.<DL COMPACT><DD><B> 1. </B>placed in or as if in an arbor; arched over; embowered. <DD><B> 2. </B>furnished with an arbor or arbors. Also, (British,) <B>arboured.</B> </DL>
