uropygial gland
noun Ornithology.
a gland opening on the back at the base of the tail in most birds that secretes an oily fluid used by the bird in preening its feathers.
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Origin of uropygial gland
First recorded in 1865–70
Also called oil gland, preen gland.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
uropygial gland
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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