Definition from Wiktionary, the free dictionary
See also: one-up
- noun: 1-up
- (idiomatic) To outdo, to do something slightly better than a competitor's prior effort.
- Every year the neighbors try to one-up each other with their holiday lights.
do something slightly better than a competitor
- (video games) An additional life or object that gives the player an extra chance to play.
- If you hit that block, you can get a one up.
Almost always written 1UP.