The Collaborative International Dictionary of English v.0.48:

Womanize \Wom"an*ize\, v. t.
   To make like a woman; to make effeminate. [Obs.] --V. Knox.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

womanize \wom"an*ize\, v. i.
   To seek the company of women with unusual frequency,
   especially for purposes of sexual intimacy.

   Syn: womanise.
        [PJC]

WordNet (r) 3.0 (2006):

womanize
    v 1: have amorous affairs; of men; "He has been womanizing for
         years" [syn: philander, womanize, womanise]
    2: to give a (more) feminine, effeminate, or womanly quality or
       appearance to; "This hairdo feminizes the man" [syn:
       feminize, feminise, effeminize, effeminise,
       womanize]