The Collaborative International Dictionary of English v.0.48:

Retrait \Re*trait"\ (r[-e]*tr[=a]t"), n. [It. ritratto, fr.
   ritrarre to draw back, draw, fr. L. retrahere. See
   Retract.]
   A portrait; a likeness. [Obs.]
   [1913 Webster]

         Whose fair retrait I in my shield do bear. --Spenser.
   [1913 Webster]