Pentateuch \Pen"ta*teuch\, n. [L. pentateuchus, Gr. ?; ? (see Penta-) + ? a tool, implement, a book, akin to ? to prepare, make ready, and perh. to E. text. See Five, and Text.]

The first five books of the Old Testament, collectively; -- called also the Law of Moses, Book of the Law of Moses, etc.

Source: Webster's Revised Unabridged Dictionary (1913)