The Collaborative International Dictionary of English v.0.48:

Eyrie \Ey"rie\, Eyry \Ey"ry\ ([=a]"r[y^] or [=e]"r[y^]; 277),
   n.; pl. Ey"ries (-r[i^]z). [See Aerie]
   The nest of a bird of prey or other large bird that builds in
   a lofty place; aerie.
   [1913 Webster]

         The eagle and the stork
         On cliffs and cedar tops their eyries build. --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

eyrie
    n 1: the lofty nest of a bird of prey (such as a hawk or eagle)
         [syn: aerie, aery, eyrie, eyry]
    2: any habitation at a high altitude [syn: aerie, aery,
       eyrie, eyry]