If you ever draped a blanket over bushes or lawn chairs in the backyard and pretended to bunk down under it when you were a kid, you’ve made a bivouac — a temporary, makeshift camp with little or no cover.
Bivouac comes from the 18th-century German word biwacht, and originally meant a patrol of ordinary citizens who helped the town’s night watchmen. Nowadays, you’ll most often see it used as a noun, but it can be a verb too — and it’s often associated with soldiers, though that’s not essential. If you tend to sleepwalk, you might not want to bivouac at the edge of that cliff; make your bivouac in the meadow instead.
temporary living quarters specially built by the army for soldiers
a site where people on holiday can pitch a tent
live in or as if in a tent