apocrine gland
noun
: a gland and especially a sweat gland that secretes a viscous fluid into a hair follicle (as in the armpit or groin), is lined with a single layer of usually columnar cells, and typically does not become active until puberty compare eccrine gland
Note: It is now understood that apocrine glands produce a secretion which lacks cellular material and causes little damage to the secreting cell. While this secretion pattern is more closely related to the merocrine than the apocrine type, these glands continue to be referred to as apocrine glands because of their uniquely characteristic large secretory lumen and milky secretion.
Example Sentences
Recent Examples on the Web That type of sweat comes from the apocrine glands, which are located mainly in the underarm and groin. 
Robert J. Davis, CNN, 28 Feb. 2018 Humans also have apocrine glands, primarily in the armpit and groin. Tim Newcomb, Popular Mechanics, 7 Dec. 2016
Robert J. Davis, CNN, 28 Feb. 2018 Humans also have apocrine glands, primarily in the armpit and groin. Tim Newcomb, Popular Mechanics, 7 Dec. 2016 Word History
First Known Use
1930, in the meaning defined above