bivy bag

noun
variants: or

bivy sac

less commonly

bivvy bag

or

bivvy sac

Definition of bivy bag

  1. :  a collapsible bag made of weatherproof fabric that is used to provide shelter usually for a single person in the wilderness All night the rain came in wind-lashed waves that hammered at the nylon bivy bag … — Craig Medred, Anchorage Daily News, 30 Sept. 1990 I was comfortably warm in my sleeping bag and bivvy bag … — Clive Tully, Geographical Magazine, March 1990 I crawled back to my bike and unhooked my survival kit—a bivy sack, sleeping bag and foam pad. — Jill Homer, Juneau (Alaska) Empire, 16 Mar. 2008 This well-designed, compact bivvy sack is easy to slide into and protects best when temperatures are above 9C. — Toronto Star, 16 Aug. 2008

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1975

First Known Use of bivy bag

1975


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