verb
(intransitive) To fall heavily due to lack of energy.
(transitive) To cause to drop heavily.
(intransitive, informal) To fail completely; not to be successful at all (of a movie, play, book, song etc.).
(sports, intransitive) To pretend to be fouled in sports, such as basketball, hockey (the same as to dive in soccer)
(intransitive) To strike about with something broad and flat, as a fish with its tail, or a bird with its wings; to rise and fall; to flap.
(poker, transitive) To have (a hand) using the community cards dealt on the flop.
(intransitive, slang) To stay, sleep or live in a place.
(transitive) To flip; to reverse (an image).
(transitive, prison slang) To deny someone parole.
noun
A heavy, passive fall; a plopping down.
A complete failure, especially in the entertainment industry.
(poker) The first three cards turned face-up by the dealer in a community card poker game.
Dung, as in cow-flop.
(slang) A flophouse.
interjection
Indicating the sound of something flopping.
adverb
Right, squarely, flat-out.
With a flopping sound.
noun
(computing) Abbreviation of floating-point operation.
(by confusion, computing) One floating-point operation per second, a unit of measure of processor speed.