unbraid

from WordNet (r) 3.0 (2006)

unbraid
    v 1: undo the braids of; "unbraid my hair" [ant: {braid},
         {pleach}]

from The Collaborative International Dictionary of English v.0.48

Unbraid \Un*braid"\, v. t. [1st pref. un- + braid.]
   To separate the strands of; to undo, as a braid; to unravel;
   to disentangle.
   [1913 Webster]