1. An intentional defensive shot, the most common goal of which is to leave the opponent either no plausible shot at all, or at least a difficult one.
2. A shot that is called aloud as part of a game's rules; once invoked, a safety usually allows the player to pocket his or her own object ball without having to shoot again, for strategic purposes. In games such as seven-ball, in which any shot that does not result in a pocketed ball is a foul under some rules, a called safety allows the player to miss without a foul resulting. A well-played safety may result in a snooker.