The American HeritageĀ® Dictionary of the English Language, 4th Edition
n. A dull sound; a thump.
n. A blow that produces a dull sound.
n. Informal A stupid, dull person.
verb-intransitive. To make or move with a clunk.
verb-intransitive. To strike something so as to make a dull sound.
v. 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 changesā ( Christian Science Monitor).
n. a dull, metallic sound, especially one made by two bodies coming into contact
v. to make such a sound
The Century Dictionary and Cyclopedia
To emit a sudden hollow, gurgling sound, such as is made when a cork is quickly pulled out of the neck of a bottle.
n. A sound such as is expressed by the imitative verb clunk; the gurgling sound made by liquor when poured from a bottle.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a heavy dull sound (as made by impact of heavy objects)
v. make or move along with a sound as of a horse's hooves striking the ground
Word Usage
"As each business owner was going around the table telling us what their companies did, I noticed that some of the stories just went "clunk" -- in a good way."