unhook

To remove from a hook.

A rather interesting and notable convenience, however, is that of ice water bags, which are hung on to the outside of the coaches at certain stops. These can be reached by leaning out of the window rather perilously, to unhook them, and paper cups are stocked in the compartments.

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.

To unfasten by means of hooks.

to unhook a bra

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

To unfasten the bra of (its wearer).