cavities
Webster's Dictionary (GCIDE)
1.Hollowness. [Obs.] [1913 Webster]
The cavity or hollowness of the place.— Goodwin.[1913 Webster]
2.A hollow place; a hollow; as, the abdominal cavity. [1913 Webster]
An instrument with a small cavity, like a small spoon.— Arbuthnot.[1913 Webster]
Abnormal spaces or excavations are frequently formed in the lungs, which are designated cavities or vomic[ae].— Quain.[1913 Webster]
Body cavity, the c[oe]lum. See under Body. [1913 Webster]