throw your hand in

US /θroʊ jʊər hænd ɪn/
UK /θroʊ jʊər hænd ɪn/
"throw your hand in" picture
1.

to give up or admit defeat

:
After trying for hours, he decided to throw his hand in and ask for help.
The team was losing badly, so the coach told them to throw their hand in.