I. leap ‧ frog 1 /ˈliːpfrɒɡ $ -froːɡ, -frɑːɡ/ BrE AmE noun [uncountable]
[ Date: 1500-1600 ; Origin: Because the jumping players look like frogs ]
a children’s game in which someone bends over and someone else jumps over them
II. leapfrog 2 BrE AmE verb ( past tense and past participle leapfrogged , present participle leapfrogging ) [intransitive and transitive]
to suddenly become better, more advanced etc than people or organizations that were previously better than you:
The company leapfrogged its rivals into a leading position.