The equipment used to play squash is a squash-specific racquet and ball.
The following is a list of commonly used terms and expressions in the sport of Squash:
Winner - A shot with which the receiver cannot even make contact with the racquet; used especially with reference to service.
Appeal - A player's request to the Referee to consider an on or off court situation. "Appeal" is used throughout the rules in two contexts:
Where the player requests the Referee to consider varying a Marker's decision.
Where the player requests the Referee to allow a let.
The correct form of appeal by a player is "Appeal please" or "Let please".
Board - The lowest horizontal marking on the front wall, with the tin beneath it covering the full width of the court.
Box (SERVICE) - A square area in each quarter court bounded by part of the short line, part of the side wall and by two other lines, and from within which the server serves.
Service Line - A line upon the front wall, 50 millimeters (2 inches) in width, the top edge of which is 1.83 meters (6 feet) above the floor and extending the full width of the court.
Game Ball - The state of the score when the server requires one point to win the game in progress. ("Game ball" is also used as a Marker's call).
Half-court line - A line set upon the floor parallel to the side walls, dividing the back of the court into two equal parts, meeting the short line at its midpoint to form the "T".
Hand - The period from the time a player becomes server until he becomes receiver.
Hand out - Condition when a change of server occurs.
Match - The complete contest between two players, commencing with the warm up and concluding when both players have left the court at end of the final rally.
Match Ball - The state of the score when the server requires one point to win the match. ("Match ball" is also used as a Marker's call).
Nick - A shot that hits the juncture of the floor and wall, and dies. Also, the juncture itself.
Quarter Court - One half of the back part of the court which has been divided into two equal parts by the half-court line.
Rail - A shot hit close to and parallel to the sidewalls - that is, down the line or alley; a power drive hit for length.
Rally - A service only or service and any number of returns of the ball, ending when the ball ceases to be in play.
Striker - The player whose turn it is to hit the ball after it has rebounded from the front wall, or who is in the process of hitting the ball, or who - up to the point of his return reaching the front wall - has just hit the ball.
Stroke - The gain achieved by the player who wins a rally, either in the course of play or on award by the Referee, and which results in either the scoring of a point or change of hand.
Tin - Situated between the board and the floor covering the full width of the court and constructed in such a manner as to make a distinctive noise when struck by the ball.