pitch outside the strike zone that the batter does not try to hit.
of the three safe stations for the batter or base-runner.
Baseline The direct line between each base, along
which the base-runner must generally run.
Base-runner A batter who has reached base safely.
Bases loaded Bases are said to be loaded when
there is a base-runner on each base.
Batter The player trying to hit the pitch.
Batter's box A rectangular area beside home plate
where the batter must stand to hit the pitch.
Batting order The official list giving the order
in which members of the team must come to bat.
Bunt An attempt by the batter to tap the ball
instead of swinging at it.
Catcher The fielder positioned behind home plate
who catches the pitches.
Centerfielder The fielder positioned in center
field (near the middle of the outfield).
Changeup A pitch thrown deceptively slowly to
surprise the batter.
Curveball A pitch thrown with a rotation that
makes the ball curve.
Defense The fielding team.
Designated hitter A player who bats in place of a
designated team-mate in the batting line-up.
Double A hit that allows a batter to reach second
Double play A play in which two outs are made as
the result of continuous action.
Dugout The semi-enclosed area beside the playing
field where players sit when they are not actively involved in the game.
Error A mistake by a fielder that lets a batter or
base-runner advance to a base.
Fair ball A ball hit into the field of play.
Fastball A pitcher's fastest pitch.
First baseman The fielder stationed near first
Fly-ball A ball hit in the air.
Forced out An out made when a base runner, forced
to run because another team-mate must run to the base being occupied, cannot
reach the next base safely.
Foul ball A ball hit outside the foul lines.
Foul lines The two straight lines, extending from
home plate past the outside edges of first and third bases to the outfield
Foul tip A ball that barely touches the bat before
continuing sharply to the catcher with little deviance.
Grand slam A home run with a base-runner on each
base, scoring four runs.
Groundball A ball hit along the ground.
Hit A ball struck by a batter that enables the
batter to reach base safely.
Home plate The five-sided piece of whitened rubber
the batter stands beside to hit the pitch.
Home run A hit by a batter, which usually goes
over the outfield fence, that enables the batter to runaround all the bases
Infield The diamond-shaped area formed by the
three bases and home plate.
Inning A turn at batting and fielding for each
Leftfielder The outfielder stationed in left field
(the left-hand side of the outfield from the batter's perspective).
Line drive A ball hit sharply in a straight line
roughly parallel to the ground.
Live ball A ball in play.
On deck Waiting to bat next.
Outfield The playing area inside the foul lines
and beyond the infield.
Outfielder A fielder in any of the three outfield
A catcher's failed attempt to catch a good pitch, allowing a
base-runner to advance to the next base.
Pinch hitter A player who bats in place of a
teammate one time in a game.
Pinch runner A player who runs the bases in place
of a team-mate one time in a game.
Pitcher The player who delivers the ball to the
Pitcher's plate The rubber slat on which the
pitcher must stand, prior to delivering a pitch.
Pop-fly A ball hit in the air to the infield.
Relief pitcher A pitcher coming into a game in
Right-fielder The outfielder stationed in right
field (the right side of the outfield from the batter's perspective).
Run The point scored when a batter or base-runner
advances to home plate.
Run batted in The credit a batter receives for a
turn at bat that enables a team-mate to score a run.
Sacrifice fly A fly ball hit far enough to enable
a base runner on third base to score a run after the ball is caught.
Scoring position A good position for scoring a run
on most hits, referring specifically to a base-runner standing on second
base or third base.
Second baseman The fielder stationed near second
Shortstop The fielder normally positioned between
the second and third basemen.
Single A hit that allows a batter to reach first
Slide A base-running maneuver in which the player
slides into a base to avoid overrunning it, or to make it difficult for the
fielder to tag the runner with the ball.
Squeeze play An offensive play in which the batter
bunts to try to let the base-runner on third base score a run.
Starting pitcher The pitcher for each team at the
start of the game.
Steal A base-runner's successful advance from one
base to the next during a pitch that is not hit.
Strike 1. A pitch judged by the umpire to have
passed over home plate between the batter's armpits and the top of the
knees. 2. a pitch that the batter swings at and misses. 3. a foul ball when
the batter has fewer than two strikes.
Strike zone The area over home plate between the
batter's armpits and the top of the knees, where a pitch is called a strike
even if the batter does not swing the bat.
Strikeout An out where the batter has three strikes.
Tag A base runner who is off base is touched with
the ball by a fielder.
Third baseman The fielder stationed near third
Triple A hit that allows a batter to reach third
Triple play A play in which three outs are made
with one pitch ... continuous play.
Walk An automatic advance to first base for the
batter after the pitcher delivers four balls.
Wild pitch A pitch thrown so wildly that the
catcher cannot easily handle it.