Also found in: Thesaurus, Idioms.
1. A dull sound; a thump.
2. A blow that produces a dull sound.
3. Informal A stupid, dull person.
v. clunked, clunk·ing, clunks
1. To make or move with a clunk.
2. To strike something so as to make a dull sound.
To strike so as to make a dull sound: "Icy weather affected the clock's mechanism and for several hours Big Ben clunked instead of bonged the time changes" (Christian Science Monitor).