Flop definition, to fall or plump down suddenly, especially with noise; drop or turn with a sudden bump or thud (sometimes followed by down): The puppy flopped. One side has the word, one side has the definition. The alternative to the planking game it is an activity consisting of flopping over objects in a public place. Definition of flop - fall, move, or hang in a loose and ungainly way, (of a performer or show) be completely unsuccessful; fail totally. We're under a roof. See flop defined for English-language learners. Take it pasito a pasito, suave suavecito. Sense of "fall or drop heavily" is , that of "collapse, fail" is ; though the figurative noun sense of "a failure" is recorded from Abbreviations Biographies Conversions Definitions Grammar Lyrics Phrases Poetry. Copyright C by HarperCollins Publishers. Commodities have been doing flip-flops on the price ladder. Your browser is ancient! Abbreviations Definitions Phrases References Symbols. Microwave and dishwasher safe. As many as of the lanky white birds are flopping awkwardly in the tops of the towering trees, roosting, squawking, falling out of nests. She held forth her right hand—full unwillingly, as I saw—and something rustled down her gown and dropped with a flop at her feet.