1.open to or abounding in fresh air;
airy rooms
2.not practical or realizable; speculative;
airy theories about socioeconomic improvement
3.having little or no perceptible weight; so light as to resemble air;
airy gauze curtains
4.characterized by lightness and insubstantiality; as impalpable or intangible as air;
figures light and aeriform come unlooked for and melt away- Thomas Carlyle