From The Collaborative International Dictionary of English v.0.48:
Compartment \Com*part"ment\, n. [F. compartiment, OF. compartir
to divide. See Compart.]
1. One of the parts into which an inclosed portion of space
is divided, as by partitions, or lines; as, the
compartments of a cabinet, a house, or a garden.
[1913 Webster]
In the midst was placed a large compartment composed
of grotesque work. --Carew.
[1913 Webster]
2. (Shipbuilding) One of the sections into which the hold of
a ship is divided by water-tight bulkheads.
[1913 Webster] compartmental