Origin: 1500-1600 Latin bulbus, from Greek bolbos plant with a bulb
1 the glass-covered part of an electric light, that the light shines fromSYN light bulb: a 100 watt bulb2science, biology a root shaped like a ball that grows into a flower or plant: tulip bulbs [Origin: 1500–1600 Latin bulbus, from Greek bolbos plant with a bulb]