Muck

To throw your cards away without showing them. Also the pile of folded cards.

Example

Beaten at showdown, you can muck rather than show your bluff.

Also written: mucked, mucking.

fold Give up your hand, along with any chips you have already put in.
showdown After the last bet, the players still in show their cards. The best five-card hand wins.

Practise it in 5 minutes Showdown, a short free lesson.

Quads is for adults, 18 and over. It teaches with play chips only: there is no real money, ever.