Open English Wordnet
Nouns
(n)light bulb, lightbulb, bulb, incandescent lamp, electric light, electric-light bulbelectric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity
(n)medulla oblongata, medulla, bulblower or hindmost part of the brain; continuous with spinal cord; (‘bulb’ is an old term for medulla oblongata)“the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning”