Lewis Short
col-lĭciae | collĭquĭae | conl- (noun F) : or (), , con-liquor, a flowing together; hence
* Channels, drains, or gutters for conducting water in the fields, upon the roofs of buildings, etc., Col. 2, 8, 3; Plin. 18, 19, 49, § 179; Vitr. 6, 3; cf. Paul. ex Fest. p. 114, 4 Müll.
Charlton T. Lewis, Charles Short, A Latin Dictionary