mug

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A heavy cylindrical drinking cup usually having a handle.
• noun The amount that such a cup can hold.
• noun The human face.
• noun The area of the human mouth, chin, and jaw.
• noun A grimace.
• noun A mug shot.
• noun A thug; a hoodlum.
• noun Chiefly British Slang A victim or dupe.
• intransitive verb Informal To photograph (a person's face) for police files.
• intransitive verb To threaten or assault (a person) with the intent to rob.
• intransitive verb To make exaggerated facial expressions, especially for humorous effect.

from The Century Dictionary.

• noun A. fog; a mist.
• noun A small cylindrical drinking-vessel, commonly with a handle; a small jug.
• noun The contents of a mug; as much as a mug will hold: as, a mug of milk and water.
• noun The mouth or face.
• noun A. grimace.
• To distort the face; make grimaces.
• To cram for an examination.
• noun Same as green gram (which see, under gram).

from the GNU version of the Collaborative International Dictionary of English.

• noun A kind of ceramic or metal drinking cup, with a handle, -- usually cylindrical and without a lip.
• noun Slang The face or mouth; ; -- often used contemptuously.
• transitive verb To take property from (a person) in a public place by threatening or committing violence on the person who is robbed; to rob, especially to rob by use of a weapon such as a knife or gun.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective archaic Easily fooled, gullible.
• noun A large cup for hot liquids, usually having a handle and used without a saucer.
• noun slang The face, often used deprecatingly.
• noun slang, vulgar A gullible, ignorant or easily-cheated person.
• verb transitive To assault for the purpose of robbery.
• verb intransitive To exaggerate a facial expression for communicative emphasis; to make a face, to pose for photographs in an exaggerated or affected manner.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)
• noun a person who is gullible and easy to take advantage of
• noun with handle and usually cylindrical
• noun the quantity that can be held in a mug
• verb rob at gunpoint or with the threat of violence