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שעטנז. לְשׁוֹן עֵרוּב. וְרַבּוֹתֵינוּ פֵּרְשׁוּ — שׁוּעַ טָווּי וְנוּז (ספרי): שעטנז is an expression for a mixture. Our Rabbis explained it to mean a material that is calendered (pressed, שוע), or woven (טווי), or twisted (נוז) together (Sifrei Devarim 232:1); (שעטנז is taken to be an abbreviation of these words; cf. Rashi on Leviticus 19:19 and our Note thereon).