[1] : The Collaborative International Dictionary of English v.0.48

rubber \rub"ber\, n.
   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 or a synthetic
          rubber4.
      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.
          1913 webster

   2. in some games, as bridge or whist, the odd game, as the
      third or the fifth, which decides the winner 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.
      1913 webster

   3. india rubber; caoutchouc; gum elastic; -- also called
      natural rubber.
      1913 webster +pjc

   4. any substance, whether natural or synthetic, resembling
      india rubber with respect to its elasticity1.
      pjc

   5. a low-cut overshoe made of natural or synthetic rubber4,
      serving to keep the feet and shoes dry when walking in the
      rain or on a wet surface; -- usually used in the plural.
      1913 webster

   6. a condom. slang
      pjc

   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.
      1913 webster
see also:
natural rubber condom antimony rubber hard rubber india rubber caoutchouc 
rubber cloth rubber dam 

Antimony >> A Words
Antimony, definition of term: Antimony
antimony_pag1.html

Rubber >> R Words
Rubber, definition of term: Rubber
rubber_pag1.html

Rubber Cement >> R Words
Rubber Cement, definition of term: Rubber Cement
rubber+cement_pag1.html

Rubber Band >> R Words
Rubber Band, definition of term: Rubber Band
rubber+band_pag1.html

India Rubber >> I Words
India Rubber, definition of term: India Rubber
india+rubber_pag1.html