Learn how to say Plunk correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word plunk:
1 [no object] play a keyboard or plucked stringed instrument in an inexpressive way:
I got a guitar when I was twelve and started plunking away on it
2 [with object] US hit (someone) abruptly:
he plunked him in the back
3 [with object and adverbial] chiefly North American set down heavily or abruptly:
she plunked her pack on top of the bar
(plunk something down) pay a sum of money:
I plunked down £14.95 for the new paperback edition
1the sound made by abruptly plucking a string of a stringed instrument:
the singing was punctuated by the plunks of the guitar
2US a heavy blow.
early 19th century: probably imitative