Webster's Revised Unabridged Dictionary · 1913

Sibylline

Sibylline , adjective

[Latin sibyllinus.]

Pertaining to the sibyls; uttered, written, or composed by sibyls; like the productions of sibyls.
Collocations (1)
Sibylline books (Rom. Antiquities) , (a) (Rom. Antiq.) Books or documents of prophecies in verse concerning the fate of the Roman empire, said to have been purchased by Tarquin the Proud from a sibyl. (b) Certain Jewish and early Christian writings purporting to have been prophetic and of sibylline origin. They date from 100 b. c. to a. d. 500.