Old testament

имя существительное [библеистика] (the Old Testament) Ветхий Завет

Большой англо-русский словарь

Old testament

noun the first part of the Christian Bible containing the books of the Jewish canon of Scripture — see bible table

Merriam-Webster's Collegiate Dictionary

Old testament

[C programmers] The first edition of K&R, the sacred text describing Classic C.

Free Online Dictionary of Computing