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rub·ber | \ ˈrə-bər 
\
\Definition of rubber
(Entry 1 of 2)
1a : one that rubs
b : an instrument or object (such as a rubber eraser) used in rubbing, polishing, scraping, or cleaning
c : something that prevents rubbing or chafing
2
[from its use in erasers]
a : 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
b : any of various synthetic rubberlike substances
c : natural or synthetic rubber modified by chemical treatment to increase its useful properties (such as toughness and resistance to wear) and used especially in tires, electrical insulation, and waterproof materials
3 : something made of or resembling rubber: such as
a : a rubber overshoe
b(1) : a rubber tire
(2) : the set of tires on a vehicle
c : a rectangular slab of white rubber in the middle of a baseball infield on which a pitcher stands while pitching
d : condom sense 1
rubber
noun (2)Definition of rubber (Entry 2 of 2)
1 : a contest consisting of an odd number of games won by the side that takes a majority (such as two out of three)
2 : an odd game played to determine the winner of a tie
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More Definitions for rubber
rubber
nounrub·ber | \ ˈrə-bər \
\Kids Definition of rubber
1 : an elastic substance obtained from the milky juice of some tropical plants
2 : something (as an overshoe) made of rubber
3 : something used in rubbing
4 : a synthetic substance like rubber
5 : a flat white rectangle on which a baseball pitcher stands
rubber
nounrub·ber | \ ˈrəb-ər \
\Medical Definition of rubber
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 sense 1
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Time Traveler for rubber
The first known use of rubber was in the 15th century
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