Batting Average: Percentage of times a player gets a base hit.

Diamond: Nickname for the infield, sometimes used to describe entire field.

Double Play: When two outs are made on a single batted ball.

Earned run: A run that is scored without the aid of an error.

Hit-and-run play: First base runner tries for second base when the pitcher throws the ball. This is used to get infielders moving in the hope that a hit would allow the runner on first to reach third.

Sacrifice: When a batter bunts a ball and is put out, but the play allows a runner to take a base.

Squeeze play: The batter bunts the ball, allowing the runner from third base to score.

Triple play: When three outs are made on a single batted ball.

Dead Ball: Is not considered in play again, until the pitcher is stationed within the 16-foot circle and the umpire calls play ball.

Foul Tip: Is a batted ball, which goes directly and speedily from the bat to the catcher’s mitt or hand not higher than the batters head and is legally caught by the catcher, ball remains alive.

Crow Hop: Is the replanting of the pivot foot prior to delivery of the pitch.

Strike Zone: Is that space over home plate, which is between the batters forward armpit and the top of the knees when the batter assumes a natural batting stance. Any part of the ball passing through the strike zone in flight shall be considered a strike; the umpire shall determine the batter’s strike zone according to the batter’s usual stance.

Bunt: Is a fair ball, which occurs when the batter does not swing to hit the ball, but holds the bat in the path of the ball to tap it slowly to the infield.

Drag Bunt: Is a bunt where the batter attempts to bunt the ball by running forward in the batter box, carrying the bat with her. The movement of the bat is in conjunction with the batters forward movement.

Attempted Bunt: Is any movement of the bat toward the ball when the ball is over or near the plate area. The mere holding of the bat in the strike zone is not an attempt to bunt. If an attempted bunt results in a foul ball, it is treated as any other foul ball, if the batter has two strikes and this happens, he is out.

Slap Hit: Occurs when the batter gives the appearance of bunting, using a modified swing or slap at the ball as it approaches home plate. If an attempt to "SLAP" is a foul ball, it is treated the same as any other foul ball including an attempt by the batter with two strikes.

Wild Pitch: A wild pitch is a pitch that cannot be handled by the catcher with ordinary effort.

Passed Ball: A passed ball is a pitch which the catcher fails to stop or control with ordinary effort and which enables a runner to advance.

Catch: Is the act of a fielder getting secure possession in a hand or glove of a live ball in flight and firmly holding it, provided a cap, protector, mask, pocket or other part of the uniform is not used to trap the ball. It is considered a catch. If a fielder catches a fair or foul ball and then leaves live-ball area with both feet by stepping or falling into a beach, dugout, stand, bleacher or over any boundary or barrier, such as a fence, rope, chalk line, or a pre-game determined imaginary boundary line of the field of play. Falling into does not include merely running against such object. It is not a catch when a fielder touches a batted ball in flight and the ball then contacts a member of the offensive team or an umpire and is then caught by a defensive player.

On-Deck Circle: For each team is a circle 5 feet in diameter located a safe distance to the side and away from home plate, at least 30 feet if space allows.

Throw out: Is a putout caused by a throw to first base to retire a batter-runner, or to any other base to which a runner is forced or is required to retouch.

Strikeout: Is the result of the pitcher getting a third strike charged to a batter. In fast pitch, this usually results in the batter being out. Anytime first base is unoccupied, or there are two outs, and the third strike is not caught, the batter-runner is entitled to advance.

Slide: Can be either feet first or head first. If a runner slides feet first, at least one leg and buttock shall be on the ground. If a runner slides, the runner shall be within reach of the base with either a hand or a foot when the slide is completed.

"Time" is the command of the umpire to suspend play. The ball becomes dead when it is given.