A jail
Cage
If you mean the small barred enclosure you end up in after ascending to the surface, there should be a lever to open it just to the right of the exit.
As the name suggests, the barred spiral galaxy has a barred central core.See related link for a pictorial
Pen.
A barred antshrike is a passerine bird of the antbird family, Latin name Thamnophilus doliatus.
As the name suggests, the barred spiral galaxy has a barred central core.See related link for a pictorial
casemate
Sin bin
corral
Bear pit
The accepted scientific name is Eurema daira.