Webster's Revised Unabridged Dictionary · 1913

Pentateuch

Pentateuch , noun

[Latin pentateuchus, Greek {not transcribed}; {not transcribed} (see Penta-) + {not transcribed} a tool, implement, a book, akin to {not transcribed} to prepare, make ready, and perh. to English 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.