Collins COBUILD Advanced Learner's English Dictionary - leapfrog

(leapfrogs, leapfrogging, leapfrogged) 1. Leapfrog is a game which children play, in which a child bends over, while others jump over their back. N-UNCOUNT 2. If one group of people leapfrogs into a particular position or leapfrogs someone else, they use the achievements of another person or group in order to make advances of their own. It is already obvious that all four American systems have leapfrogged over the European versions... American researchers have now leapfrogged the Japanese and are going to produce a digital system within a year or two. VERB: V prep, V n