Synonym: electric light, electric-light bulb, incandescent lamp, light bulb, lightbulb, medulla, medulla oblongata. Similar words: bull, bulk, Bull., bullet. Meaning: [bʌlb] 
n. 1. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure 2. electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity 3. a rounded part of a cylindrical instrument (usually at one end) 4. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata) 5. a rounded dilation or expansion in a canal or vessel or organ.
n. 1. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure 2. electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity 3. a rounded part of a cylindrical instrument (usually at one end) 4. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata) 5. a rounded dilation or expansion in a canal or vessel or organ. 271. Eventually, this method is proved by calculating the ventilation of the bulb tubular hydroelectric generator in Baigou power station.