Definition of: baseball

(bās′bôl′) noun
1. A game played with a wooden bat and a hard ball by two teams, properly of nine players each, one team being at bat and the other in the field, alternately, for a minimum of nine innings: the game is played on a field having four bases marking the course each player must take in scoring a run.
2. The ball used in this game.
BASEBALL FIELD
a. Diamond (90 feet x 90 feet).
b. Players' line (75 feet x 75 feet).
c. Three-foot line (48 x 3 feet).
d. Coaches' lines.
e. Catcher's lines.
A. First base (15 inches x 15 inches).
B. Second base (15 inches x 15 inches).
C. Third base (15 inches x 15 inches).
D. Home base (17 x 8 1/2 x 12 x 8 1/2 x 12 inches; five-sided).
E., F. Batter's boxes.
G. Catcher.
H. Pitcher's plate (24 inches x 6 inches).
I. First baseman.
J. Second baseman.
K. Third baseman.
L. Shortstop.
M., N., O. Outfielders.
P Space to which base runner must confine himself.
Q. Players' benches.