Bulb ¹

Definition: A spheroidal body growing from a plant either above or below the ground (usually below), which is strictly a bud, consisting of a cluster of partially developed leaves, and producing, as it grows, a stem above, and roots below, as in the onion, tulip, etc. It differs from a corm in not being solid.

Bulb ²

Definition: A name given to some parts that resemble in shape certain bulbous roots; as, the bulb of the aorta.

Bulb ³

Definition: An expansion or protuberance on a stem or tube, as the bulb of a thermometer, which may be of any form, as spherical, cylindrical, curved, etc.

Bulb ⁴

Definition: To take the shape of a bulb; to swell.

bulb ⁵

Definition: a rounded part of a cylindrical instrument (usually at one end); "the bulb of a syringe"

bulb ⁶

Definition: electric lamp consisting of a glass bulb containing a wire filament (usually tungsten) that emits light when heated

bulb ⁷

Definition: a rounded dilation or expansion in a canal or vessel or organ

bulb ⁸

Definition: 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"

bulb ⁹

Definition: a modified bud consisting of a thickened globular underground stem serving as a reproductive structure