SEBA'CEOUS, adjective [Low L. sebaceus, from sebum, sevum, tallow.] Made of tallow or fat; pretaining to fat.
Sebaceous humor, a suet-like or glutinous matter secreted by the sebaceous glands, which serves to defent the skin and keep it soft. Coxe. Parr.
Sebaceous glands, small glands seated in the cellular membrane under the skin, which secrete the sebaceous humor. Parr.