Jastrow: לִיבּוּן

לִיבּוּן, לִבּ׳ m. (לָבַן II) 1) whitening, cleansing. B. Kam. 93ᵇ ול׳ מי הוי שינוי is whitening (the stolen wool) a change (by which the right of paying an indemnity instead of restoring the object is acquired)? Y. ib. IX, beg. 6ᵈ; a. e.—Pl. לִיבּוּנִים, לִבּ׳; יְמֵי ל׳ the days after menstruation during which white garments are worn while marital contact is still prohibited. Sabb. 13ᵇ בימי לִבּוּנַיִךְ וכ׳ how did he behave towards thee in thy days of white garments? —2) heating, glowing. Bets. 34ᵃ משום ל׳ רעפים because it resembles the act of heating (new) tiles, v. לָבַן.—Ḥull. 8ᵃ, v. חִידּוּד. Y. Ab. Zar. V, end, 45ᵇ צריכה ל׳ (not ליבין) requires purification by fire (Num. XXXI, 23); והל׳ צריך וכ׳ and the heating must be such as to make sparks come forth &c.; a. e.