Definitions For Bulb

noun

• A rounded part of a cylindrical instrument (usually at one end)
• 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)
• A modified bud consisting of a thickened globular underground stem serving as a reproductive structure
• Anything with a round shape resembling a teardrop
• A rounded part of some plants that is under the ground and that grows into a new plant during the growing season
• A part that has a rounded shape