n. The mold-board of a plow: originally its front portion. See turn-wrest plow (under plow).To twist or turn; especially, to deflect, as from the existing or normal state, character, course, or significance: now used chiefly of immaterial things.To remove, obtain, or bring by or as if by twisting or wringing; extract or pluck with. much effort; wring; wrench.To wrestle; contend; strive.n. l A twist; a writhing.n. A tortuous action; distortion; perversion; hence, a ruse; a stratagem. Compare wrench, n., 1.n. An instrument of the wrench, screw-key, or spanner kind; specifically, a key or small wrench for tuning stringed musical instruments, as the harp or piano, by turning the pins to which the strings are fastened. See tuning-hammer, and tuning-key (under key).n. The partition in an overshot wheel which determines the form of the buckets.