bʌlb ˈlaɪtˌbʌlb ˈlaɪtˌbʌlb mɛˈdʌlə

a rounded part of a cylindrical instrument (usually at one end) the bulb of a syringe electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity a rounded dilation or expansion in a canal or vessel or organ lower 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 a modified bud consisting of a thickened globular underground stem serving as a reproductive structure anything with a round shape resembling a teardrop