בְּ־ I, prefix (b. h.) in, within, on &c. בו ביום on that day; באותו מקום in that very place; מיניה וביה from it and in it, i.e. out of the very thing. B. Mets. 101ᵇ אגרא … מיניה וביה she hired carriers, paying them from the very wine which the man had placed in her storeroom.—בֹּון = בְּהוֹן. Y. Ber. II, 4ᶜ bot.; a. fr.