Tome \Tome\, n. [F. tome (cf. It., Sp., & Pg. tomo), L. tomus, fr. Gr. ? a piece cut off, a part of a book, a volume, akin to ? to cup, and perhaps to L. tondere to shear, E. tonsure. Cf. Anatomy, Atom, Entomology, Epitome. ] As many writings as are bound in a volume, forming part of a larger work; a book; -- usually applied to a ponderous volume.

Tomes of fable and of dream. --Cowper.

A more childish expedient than that to which he now resorted is not to be found in all the tomes of the casuists. --Macaulay.

Source: Webster's Revised Unabridged Dictionary (1913)