bump

1. A light blow or jolting collision. (countable) · His car had a tiny bump with a moving bus.
2. The sound of such a collision. (countable) · He heard a loud bump and saw the front part of his car was broken and the driver of the other car was running to apologise.
3. Any light sound. (countable, informal) · He heard bumps in the night.
4. A fist bump. (countable) · I held my fist up, and he gave me a bump before leaving.
5. A car accident, usually a small one. (countable) · I had a bump last time I drove into the city.
6. A collision, especially a fall. (countable) · Did you see the bump he took last night?
7. A dose of a drug, such as ketamine or cocaine, snorted; a small dose of a snorted drug. (countable, figuratively, slang, uncountable)
8. A conflict. (countable, informal)

Plural bumps