Origin of plunk

First recorded in 1760–70; expressive word akin to pluck
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British Dictionary definitions for plunk down

Word Origin for plunk

C20: imitative
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for plunk down

plunk


v.

1805, "to pluck a stringed instrument;" 1808 in sense of "drop down abruptly;" 1888 as "to hit, wound, shoot." Probably of imitative origin in all cases. Related: Plunked; plunking.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with plunk down

plunk down


Throw or place or drop heavily, as in He plunked down the money and walked out, or It was hot work, so after an hour we plunked ourselves down in the shade. [Late 1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.