crap

Etymology 1

From Middle English crappe, also in plural: crappys, craps (“chaff; buckwheat”), from Middle French crape, from Old French crappe, crapin (“chaff”) (compare Medieval Latin crappa pl, also crapinum), from Old Dutch krappen (“to cut off, pluck off”) (whence Middle Dutch crappe, crap (“a chop, cutlet”), whence Dutch krip (“a steak”)). Related to crop.

noun

1. (obsolete) The husk of grain; chaff.
2. (slang, mildly vulgar, uncountable) Something worthless or of poor quality; junk.
   The long-running game show went from offering good prizes to crap in no time.
3. (slang, mildly vulgar, uncountable) Nonsense; something untrue.
   The college student boasted of completing a 10,000-word essay on Shakespeare, but that claim was utter crap.
4. (slang, mildly vulgar) Faeces/feces.
   I stepped in some dog crap that was on the sidewalk.
5. (slang, mildly vulgar, countable) An act of defecation.
   I have to take a crap.

verb

1. (mildly vulgar, slang, intransitive) To defecate.
   That soup tasted funny, and now I need to crap.
2. (mildly vulgar, slang, transitive) To defecate in or on (clothing etc.).
   He almost crapped his pants from fright.
3. (India, mildly vulgar, slang, transitive) To bullshit.
   Don't try to crap me: I know you're lying.

adj

1. (chiefly UK, Canada, US, colloquial, mildly vulgar) Of poor quality.
   I drove an old crap car for ten years before buying a new one.

intj

1. (slang, vulgar) Expression of worry, fear, shock, surprise, disgust, annoyance, or dismay.
   Oh crap! The other driver's going to hit my car!
   Crap! I lost the game.
   What the crap?!
   Aw, crap, I have to start over again from the beginning of the level.

Etymology 2

From crab's eyes.

noun

1. (gambling, dice games) A losing throw of 2, 3, or 12 in craps.
2. Attributive form of craps.
   To test the possibility that her husband’s luck was indestructible, Mary went to the crap tables and made a small bet. 1974, John Savage, The Winner’s Guide to Dice, New York, N.Y.: Grosset & Dunlap, page 16
   I step up to the least-crowded crap table, taking my place to the right of a country-and-western-type stickwoman with tightly permed blond hair who looks as if she would be more comfortable dressed in the square-dance outfit of the Frontier than wearing the chinoiserie, or maybe the japonaiserie, of her purple kimono uniform. 1992, Edward Allen, Mustang Sally, New York, N.Y., London: W. W. Norton & Company, page 72
   Separately, you are playing in a crap game. The crap bets earn you $20,000 a year so long as rates stay put but could cost you a $100,000 or $200,000 loss if rates go up. 29 December 2014, William Baldwin, “Yield Games”, in Forbes, page 103