| rubber |
an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products any of various synthetic elastic materials whose properties resemble natural rubber rubber eraser: an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil condom: contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse arctic: a waterproof overshoe that protects shoes from water or snow rubberize: coat or impregnate with rubber; "rubberize fabric for rain coats" returned for lack of funds; "a rubber check"; "a no-good check"
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| rupture |
state of being torn or burst open a personal or social separation (as between opposing factions); "they hoped to avoid a break in relations" tear: separate or cause to separate abruptly; "The rope snapped"; "tear the paper" the act of making a sudden noisy break
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| rush |
haste: the act of moving hurriedly and in a careless manner; "in his haste to leave he forgot his book" step on it; "He rushed down the hall to receive his guests"; "The cars raced down the street" a sudden forceful flow attack suddenly grasslike plants growing in wet places and having cylindrical often hollow stems urge to an unnatural speed; "Don't rush me, please!" physician and American Revolutionary leader; signer of the Declaration of Independence (1745-1813) act or move at high speed; "We have to rush!"; "hurry--it's late!" run with the ball, in football bang: the swift release of a store of affective force; "they got a great bang out of it"; "what a boot!"; "he got a quick rush from injecting heroin"; "he does it for kicks" a sudden burst of activity; "come back after the rush" race: cause to move fast or to rush or race; "The psychologist raced the rats through a long maze" first-come-first-serve(p): not accepting reservations rush(a): done under pressure; "a rush job" induce: cause to occur rapidly; "the infection precipitated a high fever and allergic reactions" (American football) an attempt to advance the ball by running into the line; "the linebackers were ready to stop a rush"
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| Ru |
ruthenium: a rare polyvalent metallic element of the platinum group; it is found associated with platinum
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| RU 486 |
abortion pill: an abortion-inducing drug (trade name RU_486) developed in France; when taken during the first five weeks of pregnancy it blocks the action of progesterone so that the uterus sloughs off the embryo
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