lūcus

ūs, m.
I. light: cum primo lucu, Ter. Ad. 5, 3, 56 (dub.; Fleck. and Ussing, luci): noctu lucuque, Varr. L. L. 5, 19, § 99 Müll. (ex conj.; al. noctulucus).
Lewis & Short
A Latin Dictionary, 1879
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