col-lūco

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.