cobwebby

from WordNet (r) 3.0 (2006)

cobwebby
    adj 1: so thin as to transmit light; "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" [syn:
           {diaphanous}, {filmy}, {gauzy}, {gauze-like}, {gossamer},
           {see-through}, {sheer}, {transparent}, {vaporous},
           {vapourous}, {cobwebby}]
    2: covered with cobwebs

from The Collaborative International Dictionary of English v.0.48

Cobwebby \Cob"web`by\, a.
   Abounding in cobwebs, or any fine web; resembling a cobweb.
   [1913 Webster]