The term 'HIGH-ARC THROW' is a type of throw in sports, specifically in baseball and softball. It is also known as a 'LOB, ' which is a three letter word. A high-arc throw is a throw that is thrown with a higher trajectory than a regular throw, allowing the ball to travel further and giving the receiver more time to catch it. This type of throw is often used when throwing to a base from a long distance or when throwing over the head of an infielder.