Definitions
1.nounAn invisible being of the air.
2.nounThe elemental being of air, usually female.
3.noun(by extension) A slender woman or girl, usually graceful and sometimes with the implication of sublime station over everyday people.
4.nounAny of the mainly dark green and blue hummingbirds (genus Aglaiocercus), the male of which has a long forked tail.