biv·ou·ac
noun/ˈbɪvuæk/
/ˈbɪvuæk/
- a temporary camp or shelter, without a tent, that is made and used especially by people climbing mountains or by soldiers
临时营地，军事野营（无帐篷） Word Originearly 18th cent. (denoting a night watch by the whole army): from French, probably from Swiss German Bîwacht ‘additional guard at night’, apparently denoting a citizens' patrol supporting the ordinary town watch.