- the nest of a bird of prey, as an eagle or a hawk.
- a lofty nest of any large bird.
- a house, fortress, or the like, located high on a hill or mountain: They felt protected from invaders in the hilltop aerie.
- an apartment or office on a high floor in a high-rise building: a penthouse aerie with a spectacular view.
- the brood in a nest, especially of a bird of prey.
- a variant spelling (esp US) of eyrie