תְּכֵלֶת, (b. h.) purple-shell, a bluish or cerulean dye, purple-blue wool, esp. the purple-blue thread used for the show-fringes. Sot. 46ᵇ היא לוז שצובעין בה ת׳ that is the city of Luz where they dye the t’kheleth (v. לוּז I). Men. IV, 1, v. עָכַב. Ib. 38ᵃ מצוה … לבן לת׳ it is proper to take the white thread first and then the blue. Ib. 38ᵇ איגרדם ת׳, v. גַּרְדֵּם. Num. R. s. 18³ טלית שכולה ת׳ מהו וכ׳ if a cloak is made entirely of blue wool, is it exempt from show-fringes? Ib. טלית שכולה ת׳ אינה וכ׳ a cloak entirely of blue wool does not release (is insufficient for compliance with the law), and four threads are sufficient?; a. v. fr.