A gland used around a tap, valve or faucet.
A gland used around a ship’s propeller shaft.
A structure resembling a gland, especially a lymph node.
A specialized cell, group of cells, or organ of endothelial origin in the human or animal body that synthesizes a chemical 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).
A secretory structure on the surface of an organ.