Jastrow: בֹּקֶר

בֹּקֶר, בּוֹקֶר m. (b. h.; v. בָּקַר) morning, early day; metaph. light, salvation. Y. Taan. I, 64ᵃ top ב׳ לצדיקים וכ׳ a morning for the righteous, a night for the wicked. Ruth. R. to III, 13 בַּבּ׳ בעולם וכ׳ ‘in the morning’—that means in the world which is all-good. Esth. R., introd. (ref. to Deut. XXVIII, 67) בבָקְרָהּ של בבל וכ׳ in the morning (ascendancy) of Babel thou shalt say, Oh that her evening (downfall) would come! Gen. R. s. 21 (ref. to Dan. VIII, 14) לִכְשֶׁיֵּעָשֶׂה בָּקְרָן וכ׳ when the morning of the (persecuting) nations shall become evening, and the evening of Israel morning; Tanḥ. ed. Bub. B’resh. 23. Mekh. Bo, s. 6 in order to define it: לבָקְרוֹ של ב׳ at the very break of morning; Y. Ber. I, 2ᶜ top.—Pl. בְּקָרִים. Yoma 33ᵇ חלקהו לשני ב׳ divide the acts prescribed into two mornings, i.e. let another act be inserted between. Ber. 27ᵃ חלקהו לשני ב׳ take only one half of the morning hours. Y. Pes. V, 31ᵈ top אית לך מימר תמן בין הַבְּקָרַיִם then it ought to have read there ben hab-b’karaim (as you read בין הערבים, Du.).