sylph

Noun

sylph noun

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