informal <非正式>
1
- no obj. play a keyboard or plucked stringed instrument, especially in an unexpressive way（尤指毫无表现力地）弹奏（键盘乐器）, 拨奏（弦乐器）。
2
- with obj. US hit (someone) abruptly〈美〉猛然击打（人）。
3
- with obj. and adverbial chiefly N. Amer. set down heavily or abruptly〈主北美〉重重放下, 突然放下：
she plunked her pack on top of the bar.
她把包裹重重地放在酒吧柜台上。
3.1
plunk something down
pay a sum of money付给, 开支, 花费：I plunked down $24.95 for the new paperback edition.
我花费了$24. 95买了这本新平装书。
1
- the sound made by abruptly plucking a string of a stringed instrument（猛然拨弦发出的）叮冬声。
2
- US a heavy blow〈美〉重击。
3
- N. Amer. an act of setting something down heavily〈北美〉重重放下。
词源
early 19th cent.: probably imitative.