A tine, filmy substance, like cobweb, floating in the air or on bushes in calm weather.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (noun) (n.) (noun)
The fine long filaments formed by a small spider, found floating in the air in calm clear weather in autumn; anything unsubstantial or flimsy.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (noun) (n.) (noun)
Fine spiderwebs which float in the air.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (noun) (n.) (noun)
Very fine spider- threads which float in the air or form webs on bushes in fine weather.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (noun) (n.) (noun)
A very fine spider's web which floats in the air; a very thin, soft, filmy, strong gauze; an outer garment made of waterproof material.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)
Very thin; filmsy; gauzy.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (adjective) (adj.) (adjective)

Usage examples:

Sometimes an Indian noble will have seventy or eighty yards of this delicate gossamer wound about his head and the ends, beautifully embroidered, with long fringes of gold, hang gracefully down upon the shoulders.
- Modern India by William Eleroy Curtis
Her eyes blazed brighter than the little jewels stitched to her gossamer dress, and when a man once looked at them he did not find it easy to look away again.
- King--of the Khyber Rifles by Talbot Mundy
" I should like to live in a curtain," thought Phyllida, " and be always young and always happy and always hand in hand with- but after all nothing could be less like a shepherd than Amor," and just then the little flame that had been urging all the figures into motion turned to a noisy puff of smoke; the picture faded from her mind and the voice of her mother destroyed the last gossamer fancy that floated through her brain.
- The Passionate Elopement by Compton Mackenzie