Main entry: diaphanous, gossamer, vaporous, vapourous, transparent, cobwebby, filmy, gauze-like, gauzy, see-through, sheer
Definition: so thin as to transmit light
Usage: a hat with a diaphanous veil; filmy wings of a moth; gauzy clouds of dandelion down; gossamer cobwebs; sheer silk stockings; transparent chiffon; vaporous silks