<B>Bohr magneton,<DL COMPACT><DD> 1. </B>the intrinsic magnetic moment (magnetism) of an electron in the direction of an applied magnetic field. <DD><B> 2. </B>the unit of magnetic moment for electrons. </DL>
<A NAME="bohrtheory">
<B>Bohr theory,</B><DL COMPACT><DD> a theory of the structure of atoms proposed by Niels Bohr, stating that electrons revolve around a nucleus in certain orbits of constant energy only. When an electron jumps to another orbit of less energy, energy is either radiated or absorbed. </DL>
<A NAME="bohunk">
<B>bohunk, </B>noun.<DL COMPACT><DD> (U.S. and Canadian Slang.) <DD><B> 1. </B>a low, rough fellow. <DD><B> 2. </B>an unskilled worker from southeastern or east central Europe (used in an unfriendly way). </DL>
<A NAME="boil">
<B>boil</B> (1), verb, noun.<DL COMPACT><DD><I>v.i. </I> <B>1. </B>to bubble up and give off steam or vapor. <BR> <I>Ex. Water boils when heated to 212 degrees Fahrenheit.</I> <DD><B> 2a. </B>to have its contents boil. <BR> <I>Ex. The pot is boiling.</I> <DD><B> b. </B>to be subjected to the heating or cooking effects of boiling fluid. <BR> <I>Ex. The eggs are boiling.</I> <DD><B> 3. </B>(Figurative.) to be very excited; be stirred up. <BR> <I>Ex. He boiled with anger.</I> <DD><B> 4. </B>to move violently. <BR> <I>Ex. The stormy sea is boiling.</I> <DD><I>v.t. </I> <B>1. </B>to cause (a liquid) to boil. <BR> <I>Ex. Boil some water for tea.</I> <DD><B> 2. </B>to cook by boiling or by heating in boiling water. <BR> <I>Ex. We boil eggs four minutes. Boil the mixture until it begins to thicken.</I> <DD><B> 3. </B>to cleanse or sterilize by boiling. <BR> <I>Ex. to boil drinking water.</I> <DD><B> 4. </B>to prepare by boiling and evaporation. <BR> <I>Ex. to boil sugar.</I> <DD><I>noun </I> <B>1. </B>a boiling. <DD><B> 2. </B>a boiling condition. <BR> <I>Ex. Bring the mixture to a boil. (Figurative.) His anger came to a boil.</I> <BR><I>expr. <B>boil away,</B> </I>to evaporate in boiling. <BR> <I>Ex. The water began to boil away.</I> <BR><I>expr. <B>boil down,</B> <DD><B> a. </B>to make less by boiling. </I> <I>Ex. Boil down the sauce to half the amount.</I> <DD><B> b. </B>(Figurative.) to shorten by getting rid of unimportant parts. <BR> <I>Ex. The notes for his report were so long that the chairman asked him to boil them down to a simple list of important facts.</I> <DD><B> c. </B>(Informal, Figurative.) to amount to when briefly stated. <BR> <I>Ex. His long, wordy refusal all boils down to this--"You can't go."</I> <BR><I>expr. <B>boil over,</B> <DD><B> a. </B>to come to the boiling point and overflow. </I> <I>Ex. This pot of milk is boiling over.</I> <DD><B> b. </B>(Figurative.) to show excitement or anger. <BR> <I>Ex. Father boiled over at my rude remarks, but mother calmed things down again. The political frenzy was now boiling over (James A. Froude).</I> <BR><I>expr. <B>come to a boil,</B> </I>to reach the boiling point. <BR> <I>Ex. The water won't come to a boil unless you turn up the flame.</I> <BR><I>expr. <B>on the boil,</B> </I>in a state of excitement or agitation. <BR> <I>Ex. France's student rebels are on the boil again (New Scientist).</I> adj. <B>boilable.</B> </DL>
<A NAME="boil">
<B>boil</B> (2), noun.<DL COMPACT><DD> a painful, red swelling on the skin, formed by pus around a hard core; furuncle. Boils are often caused by infection. </DL>
<A NAME="boileddinner">
<B>boiled dinner,</B><DL COMPACT><DD> a dinner of meat and vegetables, especially potatoes and cabbage, boiled together. </DL>
<A NAME="boiledoil">
<B>boiled oil,</B><DL COMPACT><DD> linseed oil prepared for use in painting. </DL>
<A NAME="boiledshirt">
<B>boiled shirt,</B><DL COMPACT><DD> (U.S.) a white dress shirt with a starched bosom. </DL>
<A NAME="boiledsweet">
<B>boiled sweet,</B><DL COMPACT><DD> (British.) hard candy. </DL>
<A NAME="boiler">
<B>boiler, </B>noun.<DL COMPACT><DD><B> 1. </B>a tank for making steam to heat buildings or drive engines. <DD><B> 2. </B>a tank for heating and holding hot water. <DD><B> 3. </B>a container for heating liquids. </DL>
<A NAME="boileriron">
<B>boiler iron,</B> =boilerplate.</DL>
<A NAME="boilermaker">
<B>boilermaker, </B>noun.<DL COMPACT><DD><B> 1. </B>a person who makes boilers. <DD><B> 2. </B>a drink of whiskey followed by beer as a chaser. </DL>
<A NAME="boilerplate">
<B>boilerplate, </B>noun, or <B>boiler plate,</B><DL COMPACT><DD><B> 1. </B>steel rolled in the form of flat plates, from 1/4 to 1/2 inch in thickness, used especially for making boilers, tanks, and ships; boiler iron. <DD><B> 2. </B>(U.S.) a fullsize model of a spacecraft, used in ground and flight tests. <DD><B> 3. </B>(U.S.) articles to be used as filler, especially in a rural newspaper, sent by some central agency on electrotypes or stereotypes. <DD><B> 4. </B>(U.S.) any syndicated material used as filler. <DD><B> 5. </B><B>=boilermaker </B>(def. 2). </DL>
<A NAME="boilerroom">
<B>boiler room,</B><DL COMPACT><DD><B> 1. </B>a room containing a boiler or boilers. <DD><B> 2. </B>(U.S. Slang.) an establishment that engages in the sale of unlisted and highly speculative securities by solicitation over the telephone. </DL>
<A NAME="boilershop">
<B>boiler shop,</B><DL COMPACT><DD> (U.S. Slang.) a boiler room. </DL>
<B>boilery, </B>noun, pl. <B>-eries.</B><DL COMPACT><DD><B> 1. </B>a place or establishment for boiling. <DD><B> 2. </B>an apparatus for boiling. </DL>
<A NAME="boilingpoint">
<B>boiling point,<DL COMPACT><DD> 1. </B>the temperature at which a liquid boils. The boiling point of water at sea level is 212 degrees Fahrenheit or 100 degrees centrigrade (Celsius). (Abbr:) b.p. <DD><B> 2. </B>(Figurative:) <BR> <I>Ex. In countries with long-standing intergroup problems ... tensions reach the boiling point more easily than they do elsewhere (Scientific American).</I> </DL>
<A NAME="boilingwaterreactor">
<B>boiling water reactor,</B><DL COMPACT><DD> a nuclear reactor which has its fissionable material immersed in water, heat being dissipated by conversion of water to steam. </DL>
<A NAME="boiloff">
<B>boil-off, </B>noun.<DL COMPACT><DD> loss of liquid fuel in a rocket by vaporization. </DL>
<A NAME="bois">
<B>bois, </B>noun.<DL COMPACT><DD> (French.) <DD><B> 1. </B>a wood; a tract of woodland. <DD><B> 2. </B>wood or timber. </DL>
<A NAME="boisbrule">
<B>bois brule,</B><DL COMPACT><DD> (Canadian.) a half-breed Indian; metis. </DL>
<A NAME="boisdarc">
<B>bois d'arc, </B>noun, pl. <B>bois d'arcs</B> or <B>bois d'arc.</B> =Osage orange.</DL>
<A NAME="boiserie">
<B>boiserie, </B>noun.<DL COMPACT><DD> a wood panel or panels decoratively carved. </DL>
<A NAME="boisterous">
<B>boisterous, </B>adjective.<DL COMPACT><DD><B> 1. </B>noisily cheerful. <BR> <I>Ex. The room was filled with boisterous laughter.</I> (SYN) exuberant. <DD><B> 2. </B>rough and stormy; violent. <BR> <I>Ex. a boisterous wind.</I> (SYN) strong, turbulent. <DD><B> 3. </B>rough and noisy. <BR> <I>Ex. a boisterous child.</I> (SYN) clamorous. adv. <B>boisterously.</B> noun <B>boisterousness.</B> </DL>
<B>Bokmal, </B>noun.<DL COMPACT><DD> the older of the two official languages of Norway; Riksmal. The other official language is <I>Nynorsk.</I> </DL>
<A NAME="boko">
<B>boko, </B>noun.<DL COMPACT><DD> (British Slang.) the nose. </DL>
<A NAME="bol">
<B>Bol.,</B><DL COMPACT><DD> Bolivia. </DL>
<A NAME="bola">
<B>bola, </B>noun, pl. <B>-las.</B><DL COMPACT><DD> a weapon consisting of stone or metal balls tied at the ends of a long cord. South American cowboys throw it so that it winds around and entangles the animal aimed at. Also, <B>bolas.</B> </DL>
<A NAME="bolar">
<B>bolar, </B>adjective.<DL COMPACT><DD><B> 1. </B>of or having to do with bole or clay. <DD><B> 2. </B>having the nature of bole or clay. </DL>
<A NAME="bolas">
<B>bolas, </B>noun, pl. <B>-las,</B> <B>-lases.</B> =bola.</DL>
<A NAME="bolasspider">
<B>bolas spider,</B><DL COMPACT><DD> a variety of spider that spins a single line of silk with a drop of sticky silk at the end instead of spinning a web. </DL>
<A NAME="bolatie">
<B>bola tie,</B><DL COMPACT><DD> an ornamental clasp attached to a length of cord with decorative tips, worn in place of a necktie. </DL>
<A NAME="bold">
<B>bold, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>without fear; brave; daring. <BR> <I>Ex. Lancelot was a bold knight.</I> (SYN) fearless, courageous. <DD><B> 2. </B>showing courage; requiring courage. <BR> <I>Ex. a bold plan. Climbing the steep mountain was a bold act.</I> <DD><B> 3. </B>too free in manner; impudent. <BR> <I>Ex. The bold little boy made faces at us as we passed.</I> <DD><B> 4a. </B>sharp and clear to the eye; striking. <BR> <I>Ex. bold handwriting. The mountains stood in bold outline against the sky.</I> (SYN) definite, pronounced, stark, free, clear. <DD><B> b. </B>(Figurative.) vigorous. <BR> <I>Ex. a bold imagination.</I> <DD><B> 5. </B>steep; abrupt. <BR> <I>Ex. Bold cliffs overlooked the sea.</I> <DD><B> 6. </B>(Printing.) bold-faced. <DD><B> 7. </B>(Obsolete.) confident. <DD><I>noun </I> (Printing.) boldface. <BR><I>expr. <B>make bold,</B> </I>to take the liberty; dare; presume; venture. <BR> <I>Ex. Nothing, I make bold to say, can be more improbable (William Gladstone).</I> adv. <B>boldly.</B> noun <B>boldness.</B> </DL>
<A NAME="boldface">
<B>boldface, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> (Printing.) a heavy type that stands out clearly. Boldface has a thick face that prints blacker than ordinary type. (Abbr:) bf. <DD><I>adj. </I> <B>=bold-faced.</B> </DL>
<A NAME="boldfaced">
<B>bold-faced, </B>adjective.<DL COMPACT><DD><B> 1. </B>impudent; brazen. <BR> <I>Ex. a bold-faced lie.</I> <DD><B> 2a. </B>(of type) having a thick face. <DD><B> b. </B>(of letters or words) printed in boldface. </DL>
<A NAME="bole">
<B>bole</B> (1), noun.<DL COMPACT><DD> the stem or trunk of a tree. </DL>
<A NAME="bole">
<B>bole</B> (2), noun.<DL COMPACT><DD> any one of several fine-grained, heavy clays, usually of a red, yellow, or brown color, used as pigments. </DL>
<A NAME="bolection">
<B>bolection, </B>noun.<DL COMPACT><DD> (Architecture.) a type of molding or combination of moldings that projects beyond the surface or surfaces which it decorates, used especially to cover the joint between surfaces of different levels. Also, <B>bilection.</B> </DL>
<A NAME="bolero">
<B>bolero, </B>noun, pl. <B>-ros.</B><DL COMPACT><DD><B> 1. </B>a lively Spanish dance in triple time. <DD><B> 2. </B>the music for it. <DD><B> 3. </B>a short, loose jacket coming barely to the waist. </DL>
