plump down
English
[edit]Verb
[edit]plump down (third-person singular simple present plumps down, present participle plumping down, simple past and past participle plumped down)
- (intransitive) To sit down heavily in a seat.
plump down (third-person singular simple present plumps down, present participle plumping down, simple past and past participle plumped down)