Answer: unbolt

AnswerCrossword Clue
UNBOLTOpen a door.
unboltto open (a door, window, etc.) by or as if by removing a bolt; unlock; unfasten
unboltto undo a bolt
unboltto release, as by the removal of threaded bolts
unboltto become unbolted or unfastened
UNBOLTDetach, as a fence gate
UNBOLTDetach, in a way
UNBOLTRemove a fastener
UNBOLTWithdraw a lock
UNBOLTOpen, as a gate
UNBOLTUnfasten.
UNBOLTOpen, as a door
UNBOLTPrepare to open, in a way
UNBOLTOpen by moving a sliding rod
UNBOLTOpen, as a barn door
UNBOLTOpen, as a deadlock
UNBOLTOpen