noun

1. a filmy cobweb floating in the air or spread on bushes or grass
2. a very thin, soft, filmy cloth
3. ☆ a lightweight waterproof coat
4. anything like gossamer in lightness, flimsiness, etc.

Etymology: ME gosesomer, lit., goose summer: with allusion to the warm period in fall (St. Martin's summer) when geese are in season and gossamer is chiefly noticed

adjective