Master the word "LEAP" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource. Definition of leap noun from the Oxford Advanced Learner's Dictionary. a long or high jump. She took a flying leap and landed on the other side of the stream. He made a flying leap at the ball. (figurative) His heart gave a sudden leap when he saw her. Questions about grammar and vocabulary? LEAP definition: 1. to make a large jump or sudden movement, usually from one place to another: 2. to provide help…. Learn more. Leap definition: to spring through the air from one point or position to another; jump.. See examples of LEAP used in a sentence.