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IELTS BNC: 5262 COCA: 4791

rubber

1 of 2

noun (1)

rub·​ber ˈrə-bər How to pronounce rubber (audio)
1
a
: 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
rubber adjective

rubber

2 of 2

noun (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

Word History

Etymology

Noun (2)

origin unknown

First Known Use

Noun (1)

15th century, in the meaning defined at sense 1a

Noun (2)

1594, in the meaning defined at sense 1

Time Traveler
The first known use of rubber was in the 15th century

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