bolt-hole

[ bohlt-hohl ]
/ ˈboʊltˌhoʊl /

noun

a hole in the ground, protected opening in bushes, etc., into which an animal can flee when pursued or frightened.
a place or avenue of escape or refuge: The remote mountain village was a safe bolt-hole for refugees during the war.

Origin of bolt-hole

First recorded in 1830–40

British Dictionary definitions for bolt hole

bolt hole

noun

a place of escape from danger