v. , informal 1. To drop down; fall. After walking a mile we plunked down on a bench to rest. 2. To drop something noisily or firmly. He plunked the heavy suitcase down at the station. 3. To pay out, primarily an excessive amount I had to plunk down $55 for a concert ticket.
PLUNK DOWN
Meaning of PLUNK DOWN in English
American idioms English vocabulary. Английский словарь американских идиом. 2012