Lewis & Short

lūcĭfŭga, ae, comm. [lux-fugio], lightfleeing, light-shunning.

  1. I. Lit.: maritus, i. e. Cupid (who visited Psyche only at night), App. M. 5, p. 167, 5; id. Mag. p. 284, 38.
  2. II. Transf., one who turns night into day: turba lucifugarum, Sen. Ep. 122, 15.