A flat, pentagonal, rubber object placed at the center of the batter's box, which is used as a basis for judging pitched strikes and balls, and the touching of which by a runner advancing from or past third base scores a run
(baseball) base consisting of a rubber slab where the batter stands; it must be touched by a base runner in order to score; "he ruled that the runner failed to touch home
A base, usually consisting of a hard rubber slab, at one of the corners of a diamond at which a batter stands when hitting and which a base runner must finally touch in order to score. the place where you stand to hit the ball in baseball and the last place the player who is running must touch in order to get a point home base