2. rubber a material made by chemically treating and toughening this substance, used in the manufacture of electrical insulation, elastic bands, tires, and other products.
3. rubber any of various similar substances and materials made synthetically.
1. (noun)rubber, natural rubber, India rubber, gum elastic, caoutchouc an elasticmaterial 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
3. (noun)rubber eraser, rubber, pencil eraser an eraser made of rubber (or of a syntheticmaterial with properties similar to rubber); commonly mounted at one end of a pencil
2. (noun)rubber an instrument or thing used in rubbing, polishing, or cleaning
3. (noun)rubber a coarse file, or the rough part of a file
4. (noun)rubber a whetstone; a rubstone
5. (noun)rubber an eraser, usually made of caoutchouc
6. (noun)rubber the cushion of an electrical machine
7. (noun)rubber one who performs massage, especially in a Turkish bath
8. (noun)rubber something that chafes or annoys; hence, something that grates on the feelings; a sarcasm; a rub
9. (noun)rubber in some games, as whist, the odd game, as the third or the fifth, when there is a tie between the players; as, to play the rubber; also, a contest determined by the winning of two out of three games; as, to play a rubber of whist
1. rubber A high-molecular-weight polymeric elastomer derived from the milk juice (LATEX) of HEVEA brasiliensis and other trees and plants. It is a substance that can be stretched at room temperature to at least twice its original length and after releasing the stress, retract rapidly, and recover its original dimensions fully.