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Definition of Harderian gland in US English:
Harderian gland
noun
ZoologyA gland present in the inner angle of the eye in those birds, mammals, and other vertebrates that have a nictitating membrane or ‘third eyelid’, typically secreting a slightly oily lubricant.
Origin
Early 19th century; earliest use found in John Fleming (1785–1857), naturalist and Free Church of Scotland minister.
