n 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
n any of various synthetic elastic materials whose properties resemble natural rubber
n an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil
n contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse
n a waterproof overshoe that protects shoes from water or snow
v coat or impregnate with rubber