1. To pay the necessary fee to enter into some competitive activity, especially a card game (usually poker). A less common variant of "ante up." I like to play poker with my buddies, but I don't like having to ante in each time when I know I'm going to lose. Everyone ante in so we can start playing already!
2. To pay the money one owes for something. I can't believe we have to ante in $250 for this trip. The company said it was no longer willing to ante in such a large sum for returns that were ultimately not guaranteed.
See also: ante
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.