• Link Centre - Search Engine and Internet Directory

Dictionary definition for: Bulb

1. (n) a modified bud consisting of a thickened globular underground stem serving as a reproductive structure

2. (n) electric lamp consisting of a glass bulb containing a wire filament (usually tungsten) that emits light when heated

3. (n) a rounded part of a cylindrical instrument (usually at one end) "the bulb of a syringe"

4. (n) 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"

5. (n) a rounded dilation or expansion in a canal or vessel or organ

WordNet 2.1 Copyright Princeton University. All rights reserved.