Scotch \Scotch\, v. t. [imp. & p. p. {Scotched}; p. pr. & vb. n. {Scotching}.] [Cf. Prov. E. scote a prop, and Walloon ascot a prop, ascoter to prop, F. accoter, also Armor. skoaz the shoulder, skoazia to shoulder up, to prop, to support, W. ysgwydd a shoulder, ysgwyddo to shoulder. Cf. {Scoat}.] [Written also {scoatch}, {scoat}.] To shoulder up; to prop or block with a wedge, chock, etc., as a wheel, to prevent its rolling or slipping.