Lewis & Short

prae-mĭco, āre, v. n., to gleam or glitter forth, to glitter very much (post-class.): lucerna claro lumine praemicans, App. M. 5, p. 167, 20: praemicantis lunae candor nimius, id. ib. 11, p. 257 init.: galea nitore praemicans, id. ib. 10, p. 238; Prud. στεφ. 1, 84.