פִּשְׁתִּים, pl. (used as sing. f.; b. h. also פֵּשֶׁת a. פִּשְׁתָּה; פשת, cmp. פוש, to spread; cmp. בּוּץ) flax, linen. Kil. IX, 1 אין אסור … אלא צמר ופ׳ no mixed web is forbidden as Kilayim, except wool and flax. Sabb. 27ᵃ. Men. 39ᵇ. Y. Kil. IX, beg. 31ᵈ (ref. to Lev. XIII, 47) מה פ׳ כברייתה וכ׳ as by ‘flax’ the material in its natural color is meant, so ‘wool’ is meant &c.; Sifra Thazr., Neg., Par. 5, ch. XIII מה פ׳ כברייתו; a. fr. (interch. with next w.).