Source : WordNet®

mug
     n 1: the quantity that can be held in a mug [syn: {mugful}]
     2: a person who is gullible and easy to take advantage of [syn:
         {chump}, {fool}, {gull}, {mark}, {patsy}, {fall guy}, {sucker},
         {soft touch}]
     3: the human face (`kisser' and `smiler' and `mug' are informal
        terms for `face' and `phiz' is British) [syn: {countenance},
         {physiognomy}, {phiz}, {visage}, {kisser}, {smiler}]
     4: with handle and usually cylindrical
     [also: {mugging}, {mugged}]

mugging
     See {mug}

mugging
     n : assault with intent to rob

mug
     v : rob at gunpoint or with the threat of violence; "I was
         mugged in the streets of New York last night"
     [also: {mugging}, {mugged}]