Tenuous, light, filmy or delicate.
Anything delicate, light and flimsy.
A fine film or strand as of cobwebs, floating in the air or caught on bushes, etc.
A soft, sheer fabric.
very thin, as thin as a hair
A fishing line made from hair.
The line along one's forehead where hair starts growing.
A very thin line in writing, drawing, or typography.
A very thin fissure.