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