E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
or Jerfalcon. A native of Iceland and Norway, highest in the list of hawks for falconry. Gyr, or Ger, is, I think, the Dutch gier, a vulture. It is called the vulture-falcon because, like the vulture, its beak is not toothed. The common etymology from hieros, sacred, because the Egyptians held the hawk to be sacred, is utterly worthless. Besides Ger-falcons, we have Gier-eagles, Lammer-geiers, etc. (See HAWK.)