The Collaborative International Dictionary of English v.0.48:

Deshabille \Des`ha*bille\, n. [F. d['e]shabill['e], fr.
   d['e]shabiller to undress; pref. d['e]s- (L. dis-) + habiller
   to dress. See Habiliment, and cf. Dishabille.]
   An undress; a careless toilet.
   [1913 Webster]

WordNet (r) 3.0 (2006):

deshabille
    n 1: the state of being carelessly or partially dressed [syn:
         dishabille, deshabille]