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 hand tool for making rotational adjustments, such as fitting nuts and bolts, or fitting pipes
a hand tool that is used to hold or twist a nut or bolt a sharp strain on muscles or ligaments; "the wrench to his knee occurred as he fell"; "he was sidelined with a hamstring pull"
A wrench or a monkey wrench is an adjustable metal tool used for tightening or loosening metal nuts of different sizes
If you say that leaving someone or something is a wrench, you feel very sad about it. I always knew it would be a wrench to leave Essex after all these years Although it would be a wrench, we would all accept the challenge of moving abroad
Exclusively from a crowbar attack, especially to the torso region of the scientist, er uhmm opponent