Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cor-rīvo (conr-), āvi, ātum, 1, v. a., to conduct streams of water together, to draw together into one stream (post-Aug.): venas aquarum, Sen. Q. N. 3, 19, 4; cf. aquam, Dig. 39, 3, 3; Plin. 31, 4, 30, § 53: liquorem salis, id. 6, 14, 17, § 43: Tiberim piscinis, id. 3, 5, 9, § 53; with in aliquid, id. 6, 16, 18, § 47.