plunk

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To throw or place heavily or abruptly: plunked the money down on the counter.
2. v. To strum or pluck (a stringed instrument).
3. v. To drop or fall abruptly or heavily; plump: plunked onto the couch with a sigh of relief.
4. v. To emit a hollow twanging sound.
5. n. Informal A heavy blow or stroke.
6. n. A short hollow twanging sound.
7. adv. Informal With a short hollow thud.
8. adv. Informal Exactly; precisely: The dart landed plunk in the center of the target.

Century Dictionary and Cyclopedia

1. To strike suddenly, with a dull sound; knock; bang: as, they plunked him with stones.
2. To knock (away); knock (from).
3. To shoot; fill full of ‘lead’ (missiles).
4. To pluck (a stringed instrument) so as to produce a low or deep sound; in general, twang.
5. To make or emit an abrupt and usually heavy sound: especially used of the rough sounding of a stringed instrument, and sometimes strung out with arbitrary variations (as in the quotation).
6. To croak or cry as a raven.
7. To plunge or drop down abruptly.
8. n. A hard, dull blow: as, to hit one a plunk.
9. n. A twang; a twanging sound: as, the plunk-plunk of the banjo.
10. n. A dollar.
11. Suddenly; plump: as, he came plunk against the half-open door.

Wiktionary

1. v. To drop or throw heavily (onto or into something) so that it makes a sound

GNU Webster's 1913

1. v. To pluck and release quickly (a musical string); to twang.
2. v. To throw, push, drive heavily, plumply, or suddenly; ; also, to hit or strike.
3. v. To be a truant from (school).
4. v. To make a quick, hollow, metallic, or harsh sound, as by pulling hard on a taut string and quickly releasing it; of a raven, to croak.
5. v. To drop or sink down suddenly or heavily; to plump.
6. v. To play truant, or “hooky”.
7. n. Act or sound of plunking.
8. n. A large sum of money.
9. n. A dollar.

WordNet 3.0

1. v. make or move along with a sound as of a horse's hooves striking the ground
2. n. a hollow twanging sound
3. v. drop steeply
4. adv. with a short hollow thud
5. n. (baseball) hitting a baseball so that it drops suddenly
6. v. pull lightly but sharply with a plucking motion
7. v. set (something or oneself) down with or as if with a noise