n 1  :  an elastic substance that is obtained by coagulating the milky juice of any of various tropical plants (as of the genera Hevea and Ficus), is essentially a polymer of isoprene, and is prepared as sheets and then dried - called also caoutchouc , india rubber   2  :  CONDOM 1 .
 
 
 
Similar sounding terms:  ru·bor  rubra 
 
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