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
d
rubber
adjective
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
Examples of rubber in a Sentence
Recent Examples on the Web
Joelle Diderich, WWD, 5 Nov. 2024
The industry pioneer bought rubber plantations, timberland, and coal and iron ore mines to reduce costs, boost efficiency and streamline Ford Motor's supply chain.
—Joann Muller, Axios, 5 Nov. 2024
If Charlotte can eek out another draw in the rubber game in Central Florida next Saturday — after losing 2-0 there in the series opener — Kahlina will be considerably favored to perform his heroics again and lift The Crown into the Eastern Conference semifinals.
—Ian Nicholas Quillen, Forbes, 3 Nov. 2024
Once installed on a tubeless rim, the Outrider is sandwiched between the base of the valve stem and the rubber seal on the rim.
—Ben Coxworth, New Atlas, 3 Nov. 2024
See all Example Sentences for rubber 
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Noun
Likewise Antoni Miralda’s Have a Good Year armchair, made with repurposed rubber tires.
—Joelle Diderich, WWD, 5 Nov. 2024
The industry pioneer bought rubber plantations, timberland, and coal and iron ore mines to reduce costs, boost efficiency and streamline Ford Motor's supply chain.
—Joann Muller, Axios, 5 Nov. 2024
If Charlotte can eek out another draw in the rubber game in Central Florida next Saturday — after losing 2-0 there in the series opener — Kahlina will be considerably favored to perform his heroics again and lift The Crown into the Eastern Conference semifinals.
—Ian Nicholas Quillen, Forbes, 3 Nov. 2024
Once installed on a tubeless rim, the Outrider is sandwiched between the base of the valve stem and the rubber seal on the rim.
—Ben Coxworth, New Atlas, 3 Nov. 2024
See all Example Sentences for rubber
Dictionary Entries Near rubber
Cite this Entry
“Rubber.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rubber. Accessed 22 Nov. 2024.
Copy CitationKids Definition
rubber
1 of 2 noun
rub·ber
ˈrəb-ər 
1
: something used in rubbing, polishing, scraping, or cleaning
2
a
: an elastic substance obtained from the milky juice of various tropical plants
b
: any of various synthetic substances like rubber
3
: something made of or resembling rubber: as
a
: a rubber overshoe
b
: a rectangular slab of white rubber in the middle of a baseball infield on which a pitcher stands while pitching
4
: condom
rubberlike
adjective
-ˌlīk
rubbery
adjective
ˈrəb-(ə-)rē
rubber
2 of 2 noun1
: a contest that consists of an odd number of games (as card games) and is won by the side that takes a majority (as two out of three)
2
: an extra game played to decide the winner of a tie
Medical Definition
rubber
noun
rub·ber
ˈrəb-ər
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
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