Medical Definition of sebaceous gland
: any of the small sacculated glands lodged in the substance of the derma, usually opening into the hair follicles, and secreting an oily or greasy material composed in great part of fat which softens and lubricates the hair and skin
Seen and Heard
What made you want to look up sebaceous gland? Please tell us where you read or heard it (including the quote, if possible).