Meaning of mug

mug

Pronunciation: (mug), [key]
— n., v., mugged, mug•ging.
—n.
  1. a drinking cup, usually cylindrical in shape, having a handle, and often of a heavy substance, as earthenware.
  2. the quantity it holds.
    1. the face.
    2. the mouth.
    3. an exaggerated facial expression; grimace, as in acting.
    4. a thug, ruffian, or other criminal.
  3. a gullible person; dupe; fool.
—v.t.
  1. to assault or menace, esp. with the intention of robbery.
  2. to photograph (a person), esp. in compliance with an official or legal requirement.
—v.i.
  1. to grimace; exaggerate a facial expression, as in acting.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
  • mug (Thesaurus)