bivouac
UK[ˈbɪv.u.æk]US[ˈbɪv.u.æk]
n
a temporary camp without tents or other cover, used especially by soldiers or mountaineers.
v
to stay in a bivouac.
Etymology
the word 'bivouac' entered english in the early 18th century from the french term 'bivouac', which itself was borrowed from swiss german 'biwacht'. the swiss german term is a compound of 'bei-' (by, near) and 'wacht' (watch or guard), literally meaning an auxiliary or supplementary night watch. the original military sense of an overnight watch was extended to refer to the place where such a watch was kept—a temporary, exposed encampment. this meaning was then generalized to apply to any improvised, open-air camp, capturing the essence of a temporary and often rudimentary shelter.
Analysis
the word is a simplex loanword. it cannot be meaningfully segmented into productive morphemes within modern english spelling.
Examples
after a long day of hiking, they set up a simple bivouac under the stars.
the climbers were forced to bivouac on a narrow ledge as darkness fell.
the soldiers established a bivouac in the forest, careful to conceal their position.