throw your hand in
throw your hand ingive up; withdraw from a contest.
In card games, especially poker, if you throw your hand in you retire from the game.
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.