unhook

un- +‎ hook

unhook (third-person singular simple present unhooks, present participle unhooking, simple past and past participle unhooked)

1. (transitive) To remove from a hook.
   • 1961 March, ""Balmore"", “Driving and firing modern French steam locomotives”, in Trains Illustrated, page 146:

     After Aulnoye the route lay through the colliery area and past Maubeuge to Jeumont, on the Belgian border. There Eùgene unhooked and we handed the train over to a Belgian diesel.

2. (transitive) To unfasten by means of hooks.

   to unhook a bra

   • 1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, →OCLC, page 82:

     "She was standing in front of the mirror unhooking her frock. Mrs. P., I mean."

3. (transitive, colloquial) To unfasten the bra of (its wearer).

• konhou