(adjective) playing lightly on or over a surface; flickering / (adjective) softly bright or radiant / (adjective) marked by lightness or brilliance especially of expression
His enormous eyes, lambent, extravagantly lashed, smiled out at her wickedly; she looked around him for reflectors, microphones, camera cabling, but there was only himself and a debonair bottle of French Beaujolais, which he claimed to’ve smuggled last year into California, this rollicking lawbreaker, past the frontier guards.