בְּכוֹר, first-born (opp. פשוט, a plain, unprivileged son); also of animals. B. Bath. 126ᵃ ב׳ ופשוט; a. fr.—Y. Pes. X, beg. 37ᵇ הוה ב׳ והוה אכיל was a first-born and yet did not fast (on the eve of Passover).—Yeb. 16ᵃ; Y. ib. I, 3ᵃ bot. ב׳ שטן (play on קטן) the first in obstinate dispute.—Gen. R. s. 91 (ref. to Gen. XLII, 37) הרי זה ב׳ שוטה וכ׳ is this a foolish first-born son! are thy children not my children? [ב׳ שוטה a first-born son by his mother, v. בּוּכְרָא I.]—Bekh. VIII, 1, a. fr. ב׳ לנחלה a first-born with the privileges of a double share of inheritance (Deut. XXI, 15 sq.), ב׳ לכהן one who must be redeemed from the priest (Ex. XIII, 2). Ib. IV, 4 ראה את הב׳ examined the first-born animal (and declared it defective); a. fr.—Pl. בְּכוֹרִים, בְּכוֹרוֹת. Ex. R. s. 18 בְּכוֹרֵי מצרים the first-born of Egyptian cattle; ib. מכת בכורות the plague of the first-born in Egypt; Num. R. s. 4; a. fr.—Bekh. IV, 5 he who receives payment להיות רואה ב׳ for examining first-born animals (as to bodily defects, v. supra); a. fr.—[Y. Shek. III, beg. 47ᵇ הבכו׳, read הבַּכִּירוֹת.] Ch. בּוּכְרָא.