Bivalves

(bivalvz.) (Zoil.) See LAMELLIBRANCH I AT A. Bivouac, (biv'oo-ak.) [Fr.] (Mil.) A night-guard, performed by an entire army, when there is any apprehension of danger from the enemy; it is also applied to a temporary encampment in the open air, in distinction from the more permanent one called cantonment. [s. 96]