smiler

from WordNet (r) 3.0 (2006)

smiler
    n 1: a person who smiles
    2: the human face (`kisser' and `smiler' and `mug' are informal
       terms for `face' and `phiz' is British) [syn: {countenance},
       {physiognomy}, {phiz}, {visage}, {kisser}, {smiler}, {mug}]

from The Collaborative International Dictionary of English v.0.48

Smiler \Smil"er\, n.
   One who smiles. --Tennyson.
   [1913 Webster]