Rubber (noun)

1. A material made from the sap of the rubber tree or synthetic equivalent, characterized by its elasticity.
2. A device made of rubber, such as a rubber band or eraser.
3. An elastic band used in games and sports, such as in a game of catch.
4. A material used as a cushion or insulation.
5. A tire made of rubber.

Origin:

From the word 'rubber' from the practice of using the sap of the rubber tree to erase pencil marks.

Examples:

1. She made a bouncy ball out of rubber.
2. He used a rubber to erase the mistake on his paper.
3. They played a game of catch with a rubber ball.
4. The electric wires were covered with rubber to protect against electrical shock.
5. He changed the flat tire with a new rubber one.