Definition of rainfly in English:


Line breaks: rain|fly

noun (plural rainflies)

  • 1North American The flysheet of a tent.
    More example sentences
    • The rainfly keeps the wet out and creates a vestibule for gear storage.
  • 2West Indian A winged ant or termite, seen in numbers after rain.

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space