LUCUBRATOR
Lu"cu*bra`tor, n.
Defn: One who studies by night; also, one who produces lucubrations.
LUCUBRATORY
Lu"cu*bra*to*ry, a. Etym: [L. lucubratorius.]
Defn: Composed by candlelight, or by night; of or pertaining to night studies; laborious or painstaking. Pope.
LUCULE
Lu"cule, n. Etym: [Dim. fr. L. lux, lucis, light.] (Astron.)
Defn: A spot or fleck on the sun brighter than the surrounding surface.
LUCULENT
Lu"cu*lent, a. Etym: [L. luculentus, from lux, lucis, light.]
1. Lucid; clear; transparent. Thomson.
2. Clear; evident; luminous. " Most luculent testimonies." Hooker.
3. Bright; shining in beauty. [Obs.] Most debonair and luculent lady. B. Jonson.