v.1. To jump, leap, or bound onto something or someone: The cat pounced on the mouse and killed it. We saw a falcon pounce on a rabbit.
2. To criticize or attack someone verbally: He suddenly pounced on me for not returning his book.
3. To take advantage of something enthusiastically, as an opportunity; jump at something: She pounced on the chance to move to New York and go to law school.