I. ˈfläp verb
( flopped ; flop·ping )
Etymology: alteration of flap (II)
Date: 1602
intransitive verb
1. : to swing or move loosely : flap
2. : to throw or move oneself in a heavy, clumsy, or relaxed manner
flopped into the chair
3. : to change or turn suddenly
4. : to go to bed
a place to flop at night
5. : to fail completely
the play flopped
transitive verb
: to move or drop heavily or noisily : cause to flop
flopped the bundles down
• flop·per noun
II. adverb
Date: 1728
: right , squarely
fell flop on my face
III. noun
Date: 1823
1. : an act or sound of flopping
2. : a complete failure
the movie was a flop
3. slang : a place to sleep ; especially : flophouse
4. : dung
cow flop
also : a piece of dung