Croup is a condition that causes a swelling of the voice box (larynx) and windpipe (trachea). The swelling causes the airway below the vocal cords to become narrow and makes breathing noisy and difficult. It is most commonly caused by an infection.
A golf slice is a shot that usually ends up far to the right of your intended target. For some players this shot can curve 30 or 40 yards off line. Excessive left to right hand spin on the golf ball causes a golf slice to occur. A small amount of left to right spin on the golf ball will cause what is called a fade.
A thin shot in golf is one in which the clubhead strikes the golf ball too high (near the midpoint of the golf ball, or slighly lower or higher), which typically results in a low, sometimes slicing shot. A thin shot also often produces much more vibration that is felt in the golfer's hands.