plural mugs
[count]
1 a : a large drinking cup with a handle
a collection of coffee mugs
a beer mug
b : the liquid that is contained in a mug
He drank a mug of coffee.
2 slang : the face or mouth of a person
his ugly mug
3 British, informal : a foolish person who is easily tricked : PATSY
They're taking you for a mug.
Drinking and driving is a mug's game. [=something that only a foolish person would do]