slang To defeat one. I've been practicing really hard because I refuse to let my nemesis eat my lunch again.
eat someone's lunch
Sl. to best someone; to defeat, outwit, or win against someone. (Like a school bully taking away children's lunches and eating them.) The upstart ABC Computer Company is eating IBM's lunch.
eat someone's lunch
see under eat someone alive.
eat somebody’s ˈlunch
(American English, business) take away another company’s business or their share of the market: Unless we’re careful, foreign competitors will eat our lunch.
eat someone’s lunch
tv. to best someone; to defeat, outwit, or win against someone. (In the way that a school bully takes away children’s lunches and eats them at recess.) The upstart ABC Computer Company is eating IBM’s lunch.