Answer: underlockandkey

AnswerCrossword Clue
UNDERLOCKANDKEY

Secured

UNDERLOCKANDKEY

Safe

UNDERLOCKANDKEY

With entrance prevented, perhaps

UNDERLOCKANDKEY
Safe.
UNDERLOCKANDKEY
Secure
UNDERLOCKANDKEYWell secured
UNDERLOCKANDKEY1985 "In My Dreams" Dokken album
UNDERLOCKANDKEYIn custody
UNDERLOCKANDKEYInmates at times