Adjective: cobwebby 'kób,we-bee
- Covered with cobwebs
"James was standing at the edge of a stack of boxes that towered up among the cobwebby rafters";
- cobwebbed
- So thin as to transmit light
"a hat with a cobwebby veil";
- diaphanous, filmy, gauzy, gauze-like, gossamer, see-through, sheer, transparent, vaporous, vapourous [Brit, non-standard], vapoury [Brit, Cdn], vapory [US]