Source : Webster's Revised Unabridged Dictionary (1913)

Deflower \De*flow"er\, v. t. [Pref. de- + flower.]
   Same as {Deflour}.

         An earthquake . . . deflowering the gardens. --W.
                                                  Montagu.

         If a man had deflowered a virgin.        --Milton.

Source : WordNet®

deflower
     v 1: deprive of virginity; "This dirty old man deflowered several
          young girls in the village" [syn: {ruin}]
     2: make imperfect; "nothing marred her beauty" [syn: {mar}, {impair},
         {spoil}, {vitiate}]