rubber

Definitions

• (uncountable) Pliable material derived from the sap of the rubber tree; a hydrocarbon polymer of isoprene.
• (uncountable) Synthetic materials with the same properties as natural rubber.
• (countable) An eraser.
• (countable) A condom.
• (countable) Someone or something which rubs.
• (historical) The cushion of an electric machine.
• (countable) The rectangular pad on the pitcher's mound from which the pitcher must pitch.
• (North America) Water-resistant shoe covers, galoshes, overshoes.
• (uncountable) Tires, particularly racing tires.
• (slang) A hardship or misfortune.