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Thumper

//ˈθʌmpə// name, noun, slang

Proper Noun

Noun

1
One who thumps. countable, uncountable
2
A single-cylinder engine, especially four-stroke engines or those with large engine displacements. countable, slang, uncountable
3
A drinking game wherein players must remember personal hand signs while being distracted by others banging on a table. uncountable
4
Something big, such as a lie; a whopper. countable, slang, uncountable
5
A kind of slam-door train introduced in the late 1950s. UK, countable, slang, uncountable

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6
The Vietnam-era M79 grenade launcher (due to its distinctive report). US, countable, slang, uncountable
7
A short rope for beating disobedient sled dogs. countable, uncountable
"This [argument] was about the use of the thumper to control dog teams, and perhaps the unique living conditions of a polar base caused both sides to shift from an initial disagreement to positions more extreme than the ones they would have reached in the wider world outside."
8
A strong adherent to a religion or ideology. countable, informal, uncountable
"But in spite of the antics of its Bible thumpers and its boobocracy, my father was unable to stay mad at the United States for long."

From thump + -er.

Unscramble this word: thumper