plunk

• POS: Interjection, Noun, Verb (usu participle), Adverb

CIDE DICTIONARY

plunk, v. t. [Imitative.].

•  To pluck and release quickly (a musical string); to twang.  [Webster 1913 Suppl.]
•  To throw, push, drive heavily, plumply, or suddenly; as, to plunk down a dollar; also, to hit or strike.  [Webster 1913 Suppl.]
•  To be a truant from (school).  [Webster 1913 Suppl.]

plunk, v. i. 

•  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.  [Webster 1913 Suppl.]
•  To drop or sink down suddenly or heavily; to plump.  [Webster 1913 Suppl.]
•  To play truant, or “hooky”.  [Webster 1913 Suppl.]

plunk, n. 

•  Act or sound of plunking.  [Webster 1913 Suppl.]
•  A large sum of money.  [Webster 1913 Suppl.]

OXFORD DICTIONARY

plunk, n. & v.
--n.
1 the sound made by the sharply plucked string of a stringed instrument.
2 US a heavy blow.
3 US = PLONK(1) n.
--v.
1 intr. & tr. sound or cause to sound with a plunk.
2 tr. US hit abruptly.
3 tr. US = PLONK(1) v.

Etymology

imit.

THESAURUS

plunk

abruptly, bang, bash, bat, beating, belt, biff, blow, bonk, bump, cast, chink, chop, chuck, clap, click, clink, clip, clobber, clop, clout, clump, clunk, coldcock, crack, crump, cut, dash, deal, deal a blow, deck, dig, dint, dive, drop, drub, drubbing, drumming, dull thud, exactly, fall, fetch, fetch a blow, flick, fling, flump, flush, full, fusillade, hastily, hit, hit a clip, hurl, impetuously, impulsively, jab, kerplunk, knock, knock cold, knock down, knock out, let have it, lick, like a flash, like a thunderbolt, nose-dive, of a sudden, on short notice, pad, parachute, paste, pat, patter, pelt, pick, pitapat, pitch, pitter-patter, plank, plop, pluck, plumb, plummet, plump, plunge, point-blank, poke, pop, pounce, pounce on, pounce upon, pound, precipitantly, precipitately, precipitously, precisely, punch, rap, right, sharp, skin-dive, sky-dive, slam, slap, slog, slug, smack, smack-dab, smash, smite, snap, soak, sock, sound, spang, square, squarely, startlingly, stoop, straight, strike, strike at, stroke, strum, sudden, suddenly, surprisingly, swat, sweep the strings, swing, swipe, swoop, swoop down, take a header, tap, tattoo, throw, thrum, thrust, thud, thump, thwack, tick, tinkle, toss, tunk, twang, unawares, unexpectedly, wallop, whack, wham, whop, without notice, without warning, yerk