In archery, to loosen or remove the bowstring from one end of (the bow), which is thus relieved of all tension and becomes quite or nearly straight: opposed to brace and string. Bows are kept unstrung when not in use, except among some primitive peoples.To deprive of strings; also, to relax or untune the strings of: as, to unstring a harp. To loose; untie. To take from a string: as, to unstring beads.To relax the tension of; loosen; weaken: as, to unstring the nerves.