serve?
It is called the compression stroke.
The purpose of this stroke is to stop your opponent from playing an attacking stroke
Tennis
It is called First Round
The opposite is forehand (as in tennis).
"Wiff Waff"
The name for a generic shot in tennis is a stroke. Strokes include forehands, backhands, volleys, drop shots, lobs, approach shots, serves, returns, groundstrokes, half-volleys, lob volleys, overheads, etc.
combariene shot
When the ball hits the tennis racket, topspin (preffered stroke of tennis) makes the ball spin. The upward motion of the racket hitting the tennis ball.
In 12th century France, Tennis started by striking the ball with the palm of the hand, called paume.
In a four-stroke engine its called the compression stroke