Accompaniment:

after hitting the ball, hands and the club head end the shape of an arc.
Ace:

Hole in one.
Address:

the starting position during the swing.
Air-shot:

shot without hitting the ball, above or beside the ball. Typical error of the beginner.
Albatross:

Hole played three strokes below par.
Alignment:

Refers to body position in direction of the target, which determines the position of the clubface compared to the hole and thus the direction of the shot.
All square:

Term designating players tied at the end or during a game.
Amateur:

Golfer playing without monetary compensation.
Approach shot:

Helping with low-and middle distance towards the flag.
Approach:

small shot towards the green.
Arc:

Curve drawn by the club head during the swing.
Arm:

pound the wrists at the high point of the backswing.