Can mean
1: Not going to happen
2: Not allowed to try
3: Not being given the go-ahead
4: Not allowed to use your
throw in Backgammon (and possibly other games)
Example of antonym: "
green light"
1a: Sure we shouldn't bring this to trial?
1b:
No dice
2a: May I try to beat your
highscore?
2b: No dice
3a: Permission to follow?
3b: No dice
4: No dice, it landed on the tip.