לבי, לָבָה (contr. of להב, to be bright; cmp. לבלב, לָבַן II); Pi. לִיבָּה, לִבָּה to blow ablaze, enkindle. B. Kam. VI, 4 (59ᵇ) בא אחר ולי׳ המְלַבֶּה חייב if a third person came (after one brought the wood and another the light), and blew the wood ablaze, he who fanned the flame is responsible; לִיבְּתָהּ הרוח וכ׳ (Y. ed. לִיבָּהוּ, Mish. Nap., Ms. H. a. R. לִבְּתוֹ, לִיבְּ׳, v. Rabb. D. S. a. l. note 30) if the wind enkindled it, all are free. Ib. 60ᵃ לי׳ וליבתה הרוח if he blew and the wind set the fire ablaze, אם יש בְּלִבּוּיוֹ כדי ללַבּוֹתָהּ חייב if there was in his blow enough force to set it ablaze, he is guilty; Tosef. ib. VI, 22 נִיבָּה ונִיבְּתוֹ, כדי לנַבּוֹת … ed. Zuck. (Var. ל for נ).—B. Kam. l. c. מאן דתני ל׳ … ומאן דתני נ׳ וכ׳ he who teaches libbah is not at fault, nor is he who teaches nibbah (ref. for libbah to labbath, Ex. III, 2, for nibbah to נִיב, Is. LVII, 19); Y. ib. II, 5ᶜ top (ref. for nibbah to Jer. XX, 9 ‘it (the word of prophecy, v. נָבָא) was in my heart like a burning fire’). Bab. ib. l. c. כגון שלי׳ ברוח מצויה ולִבְּתוֹ וכ׳ it means, if he blew while there was ordinary air stirring, and then an unusual wind set in, and blew it ablaze. Ib. 59ᵇ מסר לו גחלת ול׳ he placed in his charge glowing coals, and he (the irresponsible person) did the blowing, opp. to מסר לו שלהבת. Y. Sabb. III, beg. 5ᶜ מְלַבֶּה עליה נעורת וכ׳ he lets hatchelled flax blaze over the hot ashes (so as to form a cover on which to place dishes for the Sabbath; Tosef. Sabb. III, 2 הדליקו).
Nithpa. - נִתְלַבֶּה to flame up. Sabb. 37ᵃ קטמה ונִתְלַבְּתָה if after having covered the embers with ashes, the flames blazed up again; Y. ib. l. c. ונִתְלַבַּת.