The Collaborative International Dictionary of English v.0.48:

Phiz \Phiz\, n.; pl. Phizes. [Contr. fr. physiognomy.]
   The face or visage. [Colloq.] --Cowper.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Phiz
    n 1: English illustrator of several of Dickens' novels
         (1815-1882) [syn: Browne, Hablot Knight Browne, Phiz]
    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]