Uropygial

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Uropygial \U`ro*pyg"i*al\, a. [See {Uropygium}.] (Anat.)
     Of or pertaining to the uropygium, or prominence at the base
     of the tail feathers, in birds.
     [1913 Webster]
  
     {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.
        [1913 Webster]