flop

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To fall or lie down heavily and noisily.
2. v. To move about loosely or limply: The dog's ears flopped when it ran.
3. v. Informal To fail utterly: The play flopped.
4. v. Slang To rest idly; lounge.
5. v. Slang To go to bed.
6. v. To drop or lay (something) down heavily and noisily: flopped the steak onto a platter.
7. n. The act of flopping.
8. n. The sound made when flopping.
9. n. Informal An utter failure.

Century Dictionary and Cyclopedia

1. To clap or strike, as the wings; flap.
2. To cause to fall or hang down.
3. To flap.
4. To plump down suddenly; turn or come down with a flop: as, to flop on one's knees.
5. To collapse; yield or break down suddenly.
6. To go over suddenly to another side or party; make a sudden change of association or allegiance.
7. n. The act of flopping or flapping.
8. n. A fall like that of a soft outspread body upon the ground.
9. n. Something that flops or is capable of flopping or striking, as a fluid, semi-liquid, or gelatinous substance, against the side of a vessel containing it.
10. n. A sudden collapse or breakdown, as of resistance.

Wiktionary

1. v. To fall heavily, because lacking energy.
2. v. To fail completely, not to be successful at all (about a movie, play, book, song etc.).
3. v. sports To pretend to be fouled in sports, such as basketball, hockey (the same as to dive in soccer)
4. n. An incident of a certain type of fall; a plopping down.
5. n. A complete failure, especially in the entertainment industry.
6. n. poker The first three cards turned face-up by the dealer in a community card poker game.
7. n. A place to stay, sleep or live. See flophouse
8. n. A ponded package of dung, as in a cow-flop.
9. adv. Right, squarely, flat-out.
10. adv. With a flopping sound.
11. n. computing A unit of measure of processor speed, being one floating-point operation per second.

GNU Webster's 1913

1. v. To clap or strike, as a bird its wings, a fish its tail, etc.; to flap.
2. v. colloq. To turn suddenly, as something broad and flat.
3. v. To strike about with something broad and flat, as a fish with its tail, or a bird with its wings; to rise and fall.
4. v. colloq. To fall, sink, or throw one's self, heavily, clumsily, and unexpectedly on the ground.
5. n. colloq. Act of flopping.

WordNet 3.0

1. n. a complete failure
2. adv. with a flopping sound
3. n. an arithmetic operation performed on floating-point numbers
4. n. the act of throwing yourself down
5. v. fall suddenly and abruptly
6. v. fall loosely
7. n. someone who is unsuccessful
8. v. fail utterly; collapse.
9. adv. exactly.