不及物动词

名词

1. 电灯泡
A bulb is the glass part of an electric lamp, which gives out light when electricity passes through it.

2. 球茎；鳞茎
A bulb is a root shaped like an onion that grows into a flower or plant.

1. a rounded part of a cylindrical instrument (usually at one end)

e.g. the bulb of a syringe

2. electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity

Synonym: light bulblightbulbincandescent lampelectric lightelectric-light bulb

3. a rounded dilation or expansion in a canal or vessel or organ

4. lower or hindmost part of the brain
continuous with spinal cord
(`bulb' is an old term for medulla oblongata)

e.g. the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning

Synonym: medulla oblongatamedulla

5. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure

6. anything with a round shape resembling a teardrop