In
baseball, a
baserunner is
safe when he reaches a
base without being put
out by various ways. While a runner is touching a base, he is usually not in jeopardy of being put out, and is thus "safe" from fielders' actions. The runner is in jeopardy once again, negating this safety, when he ceases touching the base, when forced on a
force play, or when the runner commits
interference.