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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 uro·py·gi·al gland /ˌjʊrəˈpaɪʤiəl-/

From: Webster's Revised Unabridged Dictionary (1913)

 U·ro·pyg·i·al a.  Anat. Of or pertaining to the uropygium, or prominence at the base of the tail feathers, in birds.
 Uropygial gland, a peculiar sebaceous gland at the base of the tail feathers in most birds. It secretes an oily fluid which is spread over the feathers by preening.
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From: WordNet (r) 2.0

 uropygial gland
      n : oil-secreting gland situated at the base of the tail in most
          birds [syn: preen gland]