The present participle of bivouac; the act of camping temporarily in the open or setting up a temporary military camp.
From the verb 'bivouac,' adding the '-ing' suffix. This gerund form became widely used in military writing during the 18th and 19th centuries.
Modern mountaineers still use 'bivouacking' when climbing—sleeping on rock faces in lightweight emergency shelters called bivouac sacks—turning a Napoleonic military term into cutting-edge climbing vocabulary.
Complete word intelligence in one call. Free tier — 50 lookups/day.