cash in

verb

1. To exchange for cash.

   “The gamblers cashed in their remaining chips at the end of the night.”

   “Some nights, I stay up cashing in my bad luck Some nights, I call it a draw”

2. To settle one's debts, accounts, or bills, especially relating to gambling.

   “He's just mad because I haven't cashed in yet.”

3. To profit from something; to take advantage of an opportunity in order to profit, especially financially; to capitalize on.

   “Lots of people tried to cash in on that market, but few succeeded.”

   “Showman Monte Proser tried to cash in on the boom on a mass basis with his Dance Carnival in Madison Square Garden, where dancers lindy hopped, shagged and fox-trotted to the orchestras of Benny Goodman, Larry Clinton and Charlie Barnett[…]”

4. To die.

   “He turned to me, and "Cap," says he, "I'll cash in this trip, I guess; / And if I do, I'm asking that you won't refuse my last request."[…”

   “Well, it all ended up, I lost my privileges for two weeks. But someday before I cash in, I hope to make it in the straw.”