noun

• (informal) A (heavy) blow or hit.
• (slang)
  "Den I gives him a five-plunk piece, and he gins me the shange."
• (slang)

adv

• (by extension) Directly, exactly, precisely.
  ""Bang!" went a gun behind me. I heard the whistle of shot. Something stung me sharply on the cheek, and I fell forward on my face, giving myself up for lost. […] "Oh, ye will never dee o' a chairge o' guid saft garden peas!" said the daft lassie, scornfully. "Maybe no," retorted I, for my choler was raised. "They are a' vera weel in broth, but if you got them plunk on the jaw, wi' a strong chairge o' powder ahint them, they might bring the water to your e'en as well as mine.""

verb

• (transitive)
  "The moving galley's bow was plunking them [oars] back through their own oar-holes, and I could hear no end of a shindy in the decks below."
• (transitive)
  "Just let them tell him a thing is pretty and fashionable, and Matthew plunks his money down for it."
• (transitive)
  "Your bass teacher loathed you for loathing the instrument. Every lesson was the same: You would plunk out a few notes, and he would stop you. "Did you practice?" / "Some," you would say. / "You have to practice." / "I know." / Practicing was the most boring thing you had ever done. Plunk plunk plunk (rest). Plunk plunk plunk (rest). That was pretty much how the double bass part went in every piece of music your teacher assigned you. He was right, you never practiced."
• (transitive)
  "Enrique plunked his money down on the counter with a sigh and bellied up to the bar."

verb

• (transitive) To be absent from (school) without permission; to be a truant.
• (intransitive) To play truant.
  "Unless we repented and humbly begged for mercy … I might as well tell lies, break crockery, kick the cat, plunk from school, and enjoy my transgressions."