Uropygial-gland meaning

yo͝orə-pījē-əl, -pĭjē-
A large gland at the base of a bird's tail that secretes an oil used in preening.
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A large gland located at the base of the tail in most birds, that secretes an oil used in preening.
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A large gland at the base of a bird's tail that secretes an oil used in preening.
noun
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A secretory organ, at the base of a bird's tail, that secretes the oil used in preening.
noun
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