Definition of "thumper" in English

noun

1. One who thumps.

2. (slang) A single-cylinder engine, especially four-stroke engines or those with large engine displacements.

3. (uncountable) A drinking game wherein players must remember personal hand signs while being distracted by others banging on a table.

4. (slang) Something big, such as a lie; a whopper.

5. (UK, rail transport, slang) A kind of slam-door train introduced in the late 1950s.

6. (US, military, slang) The Vietnam-era M79 grenade launcher (due to its distinctive report).

7. (Antarctica) A short rope for beating disobedient sled dogs.

8. (informal) A strong adherent to a religion or ideology.