Flop down, Chubby (5)

I believe the answer is:

plump

This clue is a double definition.

'flop down' is the first definition.
(thesaurus)

'chubby' is the second definition.
(I know that chubby can be written as plump)

(Other definitions for plump that I've seen before include "Fat - set down unceremoniously" , "Rather fat" , "Opt - round" , "stout" , "Having a full rounded shape" .)

I've seen this clue in The Everyman puzzle in The Observer.

Want a hint initially instead of a full solution? Install my app