aery

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

any habitation at a high altitude

characterized by lightness and insubstantiality; as impalpable or intangible as air

• “figures light and aeriform come unlooked for and melt away” Thomas Carlyle
• “aerial fancies”
• “an airy apparition”
• “physical rather than ethereal forms”