Noun bulb has 5 senses
- bulb - a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
--1 is a kind of stalk, stem
--1 has particulars: onion; shallot; squill; bulbil, bulblet
- light bulb, lightbulb, bulb, incandescent lamp, electric light, electric-light bulb - electric lamp consisting of a glass bulb containing a wire filament (usually tungsten) that emits light when heated
--2 is a kind of electric lamp
--2 has parts: filament
- bulb - a rounded part of a cylindrical instrument (usually at one end); "the bulb of a syringe"
--3 is a kind of part, portion
--3 is a part of mercury thermometer, mercury-in-glass thermometer; syringe
- medulla oblongata, medulla, bulb - 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"
--4 is a kind of neural structure
--4 is a part of brainstem, brain-stem, brain stem
--4 has parts: respiratory center
- bulb - a rounded dilation or expansion in a canal or vessel or organ
--5 is a kind of structure, anatomical structure, complex body part, bodily structure, body structure
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