HOOK
Hook describes a trajectory or ball flight in which the golf ball starts out to the right (for a right-handed golfer) before curving severely back to the left and missing its target to the left.
A hook, much like a slice, describes a shot traveling out of control to one side. A draw travels on the same trajectory as a hook but it is controlled. A pull is a miss to the left, but one that travels on a straight trajectory. For this reason, the three terms are commonly confused.