bulb
bulb /b'ʌlb/ (bulbs)
1 [N-COUNT]
A bulb is the glass part of an electric lamp, which gives out light when electricity passes through it.
The stairwell was lit by a single bulb.
= light bulb
2 [N-COUNT]
A bulb is a root shaped like an onion that grows into a flower or plant.
...tulip bulbs.light bulb (light bulbs)
[N-COUNT]
A light bulb or bulb is the round glass part of an electric light or lamp which light shines from.
= bulb
1 [N-COUNT]
A bulb is the glass part of an electric lamp, which gives out light when electricity passes through it.
The stairwell was lit by a single bulb.
= light bulb
2 [N-COUNT]
A bulb is a root shaped like an onion that grows into a flower or plant.
...tulip bulbs.light bulb (light bulbs)
[N-COUNT]
A light bulb or bulb is the round glass part of an electric light or lamp which light shines from.
= bulb