Lewis Short
(verb) : col-lūco (conl-), āre, lux
* To make light, to clear or thin a forest, etc.: collucare est succisis arboribus locum luce implere, Fest. s. v. sublucare, p. 348, 18 Müll. (explained in a different manner by Paul. ex Fest. p. 37, 12 ib.): lucum,Cato, R. R. 139: arborem,Col. 2, 21, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary