—v.intr. (flopped, flopping)
1 sway about heavily or loosely (hair flopped over his face).
2 move in an ungainly way (flopped along the beach in flippers).
3 (often foll. by down, on, into) sit, kneel, lie, or fall awkwardly or suddenly (flopped down on to the bench).
4 sl. (esp. of a play, film, book, etc.) fail; collapse (flopped on Broadway).
5 sl. sleep.
6 make a dull sound as of a soft body landing, or of a flat thing slapping water.
—n.
1 a a flopping movement. b the sound made by it.
2 sl. a failure.
3 sl. esp. US a bed.
—adv. with a flop.
Phrases and idioms:
flop-house sl. esp. US a doss-house.
Etymology: var. of FLAP
Useful english dictionary. 2012.