G4415
πρωτοτόκια
birthright
πρωτοτόκια, -ων, τά (πρωτότοκος) [in LXX (with seel. -εῖα, -εία): Gen.25:31 ff. Gen.27:36, Deu.21:17, 1Ch.5:1 (בְּכוֹרָה) * ;] the rights of the first-born, birthright (= cl. ἡ πρεσβεία): Heb.12:16.† (AS)
The KJV translates G4415 in the following manner:
birthright (2x)
Full Thayer's lexicon entry
πρωτοτόκια — prōtotókia
πρωτοτόκια, πρωτοτοκιων, τά (πρωτότοκος), in the Sept. also πρωτοτοκεια (others, πρωτοτοκεια (cf. Chandler § 99), πρωτοτόκια, manuscript Venet., Aq.), for בְּכורָה, primogeniture, the right of the firstborn (in classical Greek ἡ πρεσβεία, and τό πρεσβεῖον): Heb 12:16. (Philo repeats the word after the Sept. in his alleg. legg. 3, 69; sacrif. Abel. § 5. Occasionally also in Byzantine writings.)
1 occurrence