verb (used with object)
- to open (a door, window, etc.) by or as if by removing a bolt; unlock; unfasten.
- to release, as by the removal of threaded bolts: He unscrewed the nuts and unbolted the inspection cover.
verb (used without object)
- to become unbolted or unfastened.
- to unfasten a bolt of (a door)
- to undo (the nut) on a bolt