1. a fine, filmy substance consisting of cobwebs spun by small spiders, seen especially in autumn.
▪ a light, thin, and insubstantial or delicate material or substance:"a fine gossamer fabric that clung to her skin"
Word OriginMiddle English: apparently from goose + summer1, perhaps from the time of year around St Martin's summer, i.e. early November, when geese were eaten (gossamer being common then).