Lewis & Short

ablŭvĭum, i, n. [abluo], = diluvium, a flood or deluge, Laber. ap. Gell. 16, 7, 1 (Com. Rel. p. 300, n. 17 Rib.), Front. p. 69 Goes.; cf. Isid. in Magi Auct. vi. p. 503.