1 [U] a strong substance that can be stretched and does not allow water to pass through it, used for making tyres, boots, etc. Rubber is made from the juice of a tropical tree or is produced using chemicals 橡胶:
a rubber ball橡皮球rubber gloves橡皮手套foam rubber泡沫橡胶
2 [C] (especially US 尤为美 eraser) a small piece of rubber that you use for removing pencil marks from paper; soft material used for removing chalk marks or pen marks from a board (用来擦掉铅笔笔迹的)橡皮;(用来擦掉板上粉笔或笔迹的)板擦
☞picture at stationery 见stationery插图