bunkers
there are passenger trains that have special sleeping compartments so passengers can sleep in them overnight, thus a sleeping car.
slumbering, napping, dozing
While I was on a ship in the US Marine Corps, we called it the berthing compartments.
A dormant volcano is a volcano that is "sleeping," for lack of a better term. It is a volcano that is not currently active.
Some synovial joints are partially or completely divided into two compartments by discs of fibrcartilage called "menisci"
Ok let me ruminate on that for a bit, It is an aminal with 4 compartments in its gut.
The term somnolent means to be sleepy or drowsy. Another meaning is the causing or suggestive of drowsiness. Some synonyms you might know would include sleeping, tired, and asleep.
there are 4 compartments
there are 4 compartments
sleeping
Dormant
The term "pigeonholing" is used to mean that a committee will ignore a pending bill by placing it aside, as if in a cubbyhole. The term comes from the small compartments used for domesticated pigeons when they are nesting. Another modern synonym is to "bottle up" a bill in committee. (see related questions)