throw your hand in

throw (one's) hand in

To give up on some endeavor; to quit or abandon something; to admit defeat or failure. An allusion to a card game, especially poker. I've been working on this book for over a year, and I'm getting nowhere with it. I think I'm ready to throw my hand in. After trying their hand in the smartphone market for just a few years, the company is already throwing their hand in after finding very little success.
See also: hand, throw
Farlex Dictionary of Idioms.

throw your hand in

give up; withdraw from a contest.
In card games, especially poker, if you throw your hand in you retire from the game.
See also: hand, throw
Farlex Partner Idioms Dictionary

throw your ˈhand in

(informal) stop doing something or taking part in something, especially because you are not successful: If I fail again this time, I shall throw my hand in.
When you have no chance of winning in a game of cards, you throw your hand (= cards) into the middle of the table.
See also: hand, throw
Farlex Partner Idioms Dictionary
See also:
  • Joe Sixpack
  • Joe Six-Pack
  • pow
  • powwow
  • pow-wow
  • strike out at (something or some place)
  • hit (something) out of the (ball)park
  • go at it hammer and tongs
  • go at it tooth and nail
  • hammer and tongs