CLONK

Etymology

Noun

clonk (plural clonks)

The abrupt sound of two hard objects coming into contact.

(fishing) A stick-like tool used to strike the surface of the water and produce a sound that causes nearby fish to attack the bait.

Verb

clonk (third-person singular simple present clonks, present participle clonking, simple past and past participle clonked)

To make such a sound.

Source: Wiktionary