A fine film or strand as of cobwebs, floating in the air or caught on bushes, etc. / A soft, sheer fabric. / Anything delicate, light and flimsy.

Tenuous, light, filmy or delicate.

plural of gossamer

Covered with, or as if with, gossamer.

Any small or young spider that spins webs by which to sail in the air.

plural of gossamer spider

light and thin / (figuratively, by extension) having a flimsy factual basis; unsubstantiated, hard to believe

Any butterfly in the family Lycaenidae

plural of gossamer-winged butterfly

Resembling gossamer; light and airy.