Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
noctĭvăgus, a, um, adj. [nox-vagus; cf. Quint. 1, 5, 68], night-wandering; that wanders about by night (poet.): noctivagae faces caeli, Lucr. 5, 1191: currus (sc. Phoebes), Verg. A. 10, 216: deus, i. e. sleep, Stat. Th. 10, 158: iter, Val. Fl. 2, 44.