thumper

Meanings

1. One who thumps.
2. A single-cylinder engine, especially four-stroke engines or those with large engine displacements.
3. A drinking game wherein players must remember personal hand signs while being distracted by others banging on a table.
4. Something big, such as a lie; a whopper.
5. A kind of slam-door train introduced in the late 1950s.
6. The Vietnam-era M79 grenade launcher (due to its distinctive report).
7. A short rope for beating disobedient sled dogs.
8. A strong adherent to a religion or ideology.

1. A surname.

Etymology

From thump + -er.