Meaning

noun the lofty nest of a bird of prey (such as a hawk or eagle)

noun any habitation at a high altitude

originFrom Middle English eire, aire, from Old French aire or Medieval Latin aeria. Old French aire, in the sense of an eagle's nest, may have derived from Latin ager, or may less likely be related to the other senses, ultimately from Latin ārea.

Etymology from Wiktionary, CC BY-SA 3.0