Webster 1913 Edition
air, nest, also origin, descent, OF.
aera, nest of a bird of prey, perh. fr. L.
areaan open space (for birds of prey like to build their nests on flat and open spaces on the top of high rocks). Cf.
The nest of a bird of prey, as of an eagle or hawk; also a brood of such birds; eyrie.
Shak.Also fig.: A human residence or resting place perched like an eagle’s nest.
Webster 1828 Edition