WordWeight : Weighing the Words

Pronunciation : Rub"ber
Part of Speech : n.
Definition : 1. One who, or that which, rubs. Specifically: (a) An instrument or thing used in rubbing, polishing, or cleaning. (b) A coarse file, or the rough part of a file. (c) A whetstone; a rubstone. (d) An eraser, usually made of caoutchouc. (e) The cushion of an electrical machine. (f) One who performs massage, especially in a Turkish bath. (g) Something that chafes or annoys; hence, something that grates on the feelings; a sarcasm; a rub. Thackeray.

2. 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. Beaconsfield. "A rubber of cribbage." Dickens.

3. India rubber; caoutchouc.

4. An overshoe made of India rubber. [Colloq.] Antimony rubber, an elastic durable variety of vulcanized caoutchouc of a red color. It contains antimony sulphide as an important constituent. -- Hard rubber, a kind of vulcanized caoutchouc which nearly resembles horn in texture, rigidity, etc. -- India rubber, caoutchouc. See Caoutchouc. -- Rubber cloth, cloth covered with caoutchouc for excluding water or moisture. -- Rubber dam (Dentistry), a shield of thin sheet rubber clasped around a tooth to exclude saliva from the tooth.
Source : Webster's Unabridged Dictionary, 1913