lucet, n.m., (bot.) whortle-berry.
lucide, adj., lucid, clear.
lucidité, n.f., lucidness, lucidity, clearness.
lucifer (-fèr), n.m., Lucifer.
lucifuge, adj., shunning the light.
luciole, n.f., glow-worm; fire-fly.
lucrati-f, -ve, adj., lucrative.
lucre, n.m., lucre, gain.
lucubrateur, n.m., lucubrator.
lucubration, n.f. V. élucubration.