שְׁתִי, preced.) warp; trnsf. longitudinal direction, v. עֵרֶב. Y. Shek. VI, 50ᵃ top כחוט של ש׳ as thin as a thread of the warp. Mikv. VI, 9 כותל … שנסדק לש׳ a wall … which is cracked lengthwise; a. fr.—ש׳ וערב crosswise, v. עֵרֶב.