(n) :
a flat, pentagonal, rubber artifact 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
(n) :
a flat, pentagonal, rubber artifact 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