15: The score given to a player who has won one point in a game.

   30: The score given to a player who has won two points in a game.

   40: The score given to a player who has won three points in a game.

   Ace: A legal serve which the receiver fails to touch with the racket.

   Advantage: The first point scored after deuce, or the resulting state of the score.

   Advantage set: A set that is decided, after two players or teams become tied at six games all, by players continuing until one player or team takes a two-game lead.

   All: Apiece, as in the score "30-all".

   Approach shot: A shot hit deep into the opponent's court so a player can come to the net with as little risk as possible.

   Back court: The area between the service line and the baseline.

   Backhand: The stroke used to return balls hit to the left of a right-handed player and to the right of a left-handed player.

   Backspin: Reverse spin on a ball, causing it to bounce backwards or stop in the shortest possible time.

   Baseline: The end boundary line of a tennis court.

   Break serve: To win a game which the opponent served.

   Centre mark: A perpendicular mark denoting the centre of the baseline.

   Cross-court shot: A shot hit diagonally from one side of the court to the other.

   Deuce: A juncture in a game at which the scores are level (at 40-all) and either player or team must gain a two-point lead to win that game.

   Dink: A ball hit so it floats very softly.

   Double fault: A second failed serve in a row, resulting in the loss of the point.

   Doubles: Two people playing against two people as teams.

   Doubles court: The court for doubles, which includes an extra 1.37m between each singles sideline and doubles sideline.

   Doubles sidelines: The lines defining the limit of play on both sides of the court for doubles, 1.37m outside the singles sidelines.

   Drop shot: A stroke that causes the ball to fall abruptly after clearing the net.

   Earned point: A point won by skilful play rather than by an opponent's mistake.

   Fault: A failed serve.

   Foot fault: Incorrect positioning of the server's feet, resulting in a fault.

   Forecourt: The area between the net and the service line.

   Forehand: The stroke used to return balls hit to the right of a right-handed player and to the left of a left-handed player.

   Game: The part of a set completed when one player or team has won at least four points and is two points ahead of the opponent.

   Ground strokes: Strokes played after the ball has bounced, either forehand or backhand.

   Half volley: A shot played just after the ball has bounced.

   Hold serve: To serve and win a game.

   Kick serve: A serve hit with heavy spin, usually resulting in extra bounce when it lands.

   Let: A serve that has touched the top of the net and landed in, resulting in the serve being replayed.

   Lob: A ball hit high in the air and deep into the opponent's court, usually over the opponent's head.

   Love: Zero score

   Match: A tennis contest between two players or teams in its entirety.

   Match point: A point that, if won, wins the match.

   Net: A ball that hits the net.

   Passing shot: A shot hit past an opponent coming to, or already at, the net.

   Poach: A strategy where the net player in doubles moves over to his serving partner's side of the court to make a volley.

   Rally: The exchange of shots that decides each point.

   Receiver: The player receiving the serve.

   Return: The process of hitting a ball hit by the opponent, predominantly referring to the 'return' of a serve.

   Serve: To put the ball in play.

   Service court: The area of the court where a served ball must land.

   Service line: A line joining the sidelines of a tennis court, parallel to the net and marking the rear of the service courts.

   Set: The part of a match completed when one player or team wins at least six games and is ahead by at least two games, or has won the tie-breaker.

   Set point: The point that, if won, wins the set.

   Singles: One person playing against one person.

   Singles court: The court for singles, not including the 1.37m between each singles sideline and doubles sideline.

   Singles sideline: A line defining the limit of play on the side of the singles court, 1.37m inside each doubles sideline.

   Slice: To hit the ball with the racket oblique so the ball loses speed and bounces lower.

   Smash: A hard, overhead shot.

   Straight sets: Without losing a set.

   Tie-breaker: The deciding game in a set in which the first player or team to score seven points, with a two-point lead, wins the set. Played when the score is tied at six games all.

   Top spin: Forward spin imparted on a ball which causes it to drop sharply, enabling a player to hit the ball with more power.

   Tramline: A line defining the limit of play on the side of a singles or doubles court.

   Volley: To hit the ball before it bounces, not including smashes.

Credit: IOC

For further info., please visit http://www.olympic.org/uk/sports/programme/disciplines_uk.asp?DiscCode=TE.