A brief beam or flash of light: saw gleams of daylight through the cracks. A steady but subdued shining; a glow: the gleam of burnished gold. A brief or dim indication; a trace: a gleam of intelligence. To emit a gleam; flash or glow: "It shone with gold and gleamed with ivory\u201d ( Edith Hamilton). See Synonyms at flash. To be manifested or indicated briefly or faintly. To cause to emit a flash of light.