Lewis & Short

biblus, i, f., = [?BI/BLOS (BU/BLOS ?]), the papyrus, a sort of rush that grew largely in Egypt, from the inner bark of which paper was made (poet. for the more usual papyrus): flumineae, Luc. 3, 222; cf. Plin. 13, 11, 22, § 71 sq.
Meton., paper, Sedul. 1, 6.