rubber

rubber¹
noun

[mass noun]a tough elastic polymeric substance made from the latex of a tropical plant or synthetically
橡胶；合成橡胶
■[count noun](Brit.)a piece of such material that is used for erasing pencil or ink marks
(英)橡皮擦
a pencil with a rubber at the end.
一支头带橡皮擦的铅笔。
■[count noun](N. Amer. informal)a condom
(北美，非正式)阴茎套，避孕套
■(rubbers)(N. Amer.)rubber boots; galoshes
(北美)橡胶高统套鞋，高统橡皮套鞋

派生
rubberiness
noun
rubbery
adjective
语源

mid 16th cent.: from the verb rub + -er. The original sense was 'an implement (such as a hard brush) used for rubbing and cleaning'. Because an early use of the elastic substance (previously known as caoutchouc) was to rub out pencil marks, rubber gained the sense 'eraser' in the late 18th cent. The sense was subsequently (mid 19th cent.) generalized to refer to the substance in any form or use, at first often differentiated as India rubber

rubber²
noun

a contest consisting of a series of successive matches (typically three or five) between the same sides or people in cricket, tennis, and other games
（板球、网球和其他运动项目的）胜局比赛（通常为三局两胜或五局三胜）
■(Bridge)a unit of play in which one side scores bonus points for winning the best of three games
(桥牌)一盘胜局

语源

late 16th cent.: of unknown origin; early use was as a term in bowls

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