From The Collaborative International Dictionary of English v.0.48:
Crap \Crap\ (kr[a^]p), n.
1. In the game of craps, a first throw of the dice in which
the total is two, three, or twelve, in which case the
caster loses. Also called craps.
[Webster 1913 Suppl. +PJC]
2. same as excrement and feces. [vulgar]
Syn: shit. [PJC]
3. nonsense; balderdash; bullshit; -- also used as an
expletive. [vulgar]
Syn: bullshit. [PJC]
From The Collaborative International Dictionary of English v.0.48:
Craps \Craps\ (kr[a^]ps), n.
A gambling game with dice. It is one of the more popular
games in casinos. [Local, U.S.]
[1913 Webster +PJC]