Synonyms for bulb Found 7 synonyms across 2 meanings for “bulb”. electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity (noun) lightbulb lower or hindmost part of the brain (noun) medulla Explore Related Words Rhymes with bulbSynonyms for lightbulbSynonyms for medulla Synonym Finder | Rhyme Finder | Poetry Editor