The term 'Tennis Drop Shot' is a type of shot used in the sport of tennis. It is a shot that is hit with a low trajectory and is designed to land just over the net, making it difficult for the opponent to reach. The term 'Dink' is a four-letter word used to describe this type of shot. It is derived from the sound made when the ball hits the racket and is a combination of the words 'DIP' and 'SINK'.