(mildly) Something worthless or of poor quality; junk. Example: The long-running game show went from offering good prizes to crap in no time.
(mildly) Nonsense; something untrue. Example: The college student boasted of completing a 10,000-word essay on Shakespeare, but that claim was utter crap.
(mildly) Faeces/feces. Example: I stepped in some dog crap that was on the sidewalk.
(mildly) An act of defecation. Example: I have to take a crap.
To defecate. Example: That soup tasted funny, and now I need to crap.
To defecate in or on (clothing etc.). Example: He almost crapped his pants from fright.
To bullshit. Example: Don't try to crap me, I know you're lying.
(mildly) Of poor quality. Example: I drove an old crap car for ten years before buying a new one.
Expression of worry, fear, shock, surprise, disgust, annoyance or dismay. Example: Aw, crap, I have to start over again from the beginning of the level.
All clues having "CRAP"
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You can find a list of possible crossword clues for CRAP below.