01 a. Pertaining to the sibyls; uttered, written, or composed by sibyls; like the productions of sibyls.
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1.
Pertaining to the sibyls; uttered, written, or composed by sibyls; like the productions of sibyls.
Phrases & compounds
Sibylline books —
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.