Yes, craps is a Scrabble word!

Verb

1. Have a bowel movement

Noun

1. Expressions used when when two dice are thrown and both come up showing one spot

2. A gambling game played with two dice; a first throw of 7 or 11 wins and a first throw of 2, 3, or 12 loses and a first throw of any other number must be repeated to win before a 7 is thrown, which loses the bet and the dice

3. Obscene terms for feces

4. Obscene words for unacceptable behavior