Dictionary definition · plunk
noun
- a hollow twanging sound
- (baseball) hitting a baseball so that it drops suddenly
verb
- make or move along with a sound as of a horse's hooves striking the ground
- set (something or oneself) down with or as if with a noise"He planked the money on the table"
- drop steeply"the stock market plunged"
- pull lightly but sharply with a plucking motion"he plucked the strings of his mandolin"
adverb
- with a short hollow thud"plop came the ball down to the corner of the green"
Source: Open English WordNet (CC BY 4.0).