Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sub-lūcĕo, ēre, v. n., to shine a little, to gleam faintly, to glimmer (poet. and in post-Aug. prose): aries sublucet corpore totus, Cic. Arat. 289: crepuscula sublucent, Ov. Am. 1, 5, 5: si fragmenta (picis), subluceant, Plin. 14, 20, 25, § 127: (liquor) nigrantis rosae colore sublucens, id. 9, 36, 60, § 126: violae sublucet purpura nigrae, Verg. G. 4, 275; cf.: candida nec mixto sublucent ora rubore, Ov. H. 21, 217.
sub-lūco, āre, 1, v. a. [lux], to trim, cut away, thin out the branches of a tree, to admit light: sublucare arbores est ramos earum supputare, et veluti subtus lucem mittere, Fest. p. 348 Müll.: arbor … nisi a domino sublucari non potest, isque conveniendus est ut eam sublucet, Paul. Sent. 5, 6, 13; cf. colluco.