v. phr. , slang To get ahead of; start before (others); have an advantage over. Don't let the other boys get the jump on you at the beginning of the race. Our team got the jump on their rivals in the first minutes of play, and held the lead to win.
GET THE JUMP ON
Meaning of GET THE JUMP ON in English
American idioms English vocabulary. Английский словарь американских идиом. 2012