(v. t.) An instrument, often a simple bar or lever with jaws or an angular orifice either at the end or between the ends, for exerting a twisting strain, as in turning bolts, nuts, screw taps, etc.; a screw key. Many wrenches have adjustable jaws for grasping nuts, etc., of different sizes.
WRENCH
Meaning of WRENCH in English
Webster's English dictionary. Английский словарь Webster. 2012