Lewis & Short

sublustris, e, adj. [sub-lux], giving some light, having a faint light, glimmering (not ante-Aug., and very rare).

  1. I. Lit.: nox, Hor. C. 3, 27, 31; Liv. 5, 47: umbra (noctis), Verg. A. 9, 373; Val. Fl. 3, 141.
  2. * II. Trop.: eloquentiae Latinae lumina, Gell. 13, 24, 12.