GLAND
gland, secretory organ, secretor, secreter
(noun) any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream
Source: WordNet® 3.1
Etymology 1
Noun
gland (plural glands)
(zoology) An organ that synthesizes a substance, such as hormones or breast milk, and releases it, often into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland).
(botany) A secretory structure on the surface of an organ.
Hyponyms
• See also gland
Etymology 2
19th century.
Noun
gland (plural glands)
(mechanical) A compressable cylindrical case and its contents around a shaft where it passes through a barrier, intended to prevent the passage of a fluid past the barrier, such as
A gland used around a ship’s propeller shaft.
A gland used around a tap, valve or faucet.
Source: Wiktionary
Gland, n. Etym: [F. glande, L. glans, glandis, acorn; akin to Gr.
Parable, n.]
1. (Anat.)
(a) An organ for secreting something to be used in, or eliminated
from, the body; as, the sebaceous glands of the skin; the salivary
glands of the mouth.
(b) An organ or part which resembles a secreting, or true, gland, as
the ductless, lymphatic, pineal, and pituitary glands, the functions
of which are very imperfectly known.
Note: The true secreting glands are, in principle, narrow pouches of
the mucous membranes, or of the integument, lined with a continuation
of the epithelium, or of the epidermis, the cells of which produce
the secretion from the blood. In the larger glands, the pouches are
tubular, greatly elongated, and coiled, as in the sweat glands, or
subdivided and branched, making compound and racemose glands, such as
the pancreas.
2. (Bot.)
(a) A special organ of plants, usually minute and globular, which
often secretes some kind of resinous, gummy, or aromatic product.
(b) Any very small prominence.
3. (Steam Mach.)
Definition: The movable part of a stuffing box by which the packing is
compressed; -- sometimes called a follower. See Illust. of Stuffing
box, under Stuffing.
4. (Mach.)
Definition: The crosspiece of a bayonet clutch.
Source: Webster’s Unabridged Dictionary 1913 Edition