unbolt
verb (used with object)
to open (a door, window, etc.) by or as if by removing a bolt; unlock; unfasten.
Used to describe actions that started in the past and continue into or have direct relevance to the present.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The window stood to the right of her bed, and, by stretching an arm, she could have unbolted the shutters and looked out, but she would have died rather than do it.
From Blue Aloes Stories of South Africa by Cynthia Stockley