gossamer
https://gyazo.com/5352790b441e4164c79dfc72f786955f
source: Amber Maitrejean — Gossamer sails. Photos by Amber Maitrejean
noun
a fine, filmy substance consisting of cobwebs spun by small spiders, seen especially in autumn.
(草や葉の上の)クモの巣［糸］
used to refer to something very light, thin, and insubstantial or delicate:
(布などの)薄く軽い素材［物］
e.g. in the light from the table lamp, his hair was blond gossamer
e.g. as modifier : gossamer wings.
DERIVATIVES
gossamery |ˈɡäsəmərē| adjective
ORIGIN
Middle 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).