Harper came out of the bolt-hole when Carol, her voice shaky with relief, told him it was safe.
He scuttled through the tortuous windings of the burrow, and through a bolt-hole to the open air.
Drift, in mechanics, a piece of steel or iron used to back a bolt, or to widen a bolt-hole.
A bolt-hole should be of a size to enable the bolt to be pushed in, or, at any rate, not more than gently tapped in.
The fact that the bolt-hole in the catch is empty also tells the same story.
"Perhaps there's another way out--a sort of bolt-hole," suggested Selwyn.
Like rabbits, they frequently make a bolt-hole, by which they may escape from an intruder.
There are the two holes at the ends where the doors turned on their pivots, and the bolt-hole in the middle.
When she comes out again it is as a rabbit comes from a bolt-hole when a ferret is just behind.