bulb /bʌlb/ noun [countable]
[Date: 1500-1600; Language: Latin; Origin: bulbus, from Greek bolbos 'plant with a bulb']

1. the glass part of an electric light, that the light shines from Synonym : light bulb:
a 100-watt bulb

2. a root shaped like a ball that grows into a flower or plant:
tulip bulbs

[TahlilGaran] Dictionary of Contemporary English ▲

bulb
noun
I. (also
light bulb) part of an electric lamp
ADJ. electric | bare, naked, unshaded | 100-watt, 60-watt, etc. | bright, dim | bayonet-cap, ES | energy-efficient, energy-saving, long-life, low-energy | fluorescent | halogen | clear, coloured, pearl | flash My camera needs a new flash bulb.
VERB + BULB change, replace Switch the light off before you change the bulb.
put in | remove, take out Can you take out the clear bulb and put a pearl one in?
switch on | take The fitting in the kitchen takes a fluorescent bulb.
BULB + VERB light sth The room was lit only by a single 40-watt light bulb.
fail, go I think the bulb over the sink is going to go. It's been flickering all evening.
flicker | flash, go off Coloured bulbs flashed on and off around the sign. There was a startled look on his face when the flash bulb went off.
dangle, hang A single electric light bulb dangled from the ceiling.
last These low-energy bulbs last much longer than the ordinary ones.
PHRASES by the light of a … bulb They sat reading by the light of a 40-watt bulb.
the glow of a light bulb

[TahlilGaran] Collocations Dictionary ▲

bulb
II. round plant root
ADJ. autumn, spring, spring-flowering, summer, summer-flowering | daffodil, hyacinth, tulip, etc. | garden, indoor | dwarf
VERB + BULB place, plant, put in I'm putting in some bulbs for next year. Place the bulbs close together.
dig up, take up, uproot | grow | water She usually waters the indoor bulbs once a week.
force, treat These daffodils flower so early because the bulbs have been forced.
BULB + VERB grow | flower | be over, go over The bulbs were over. All that remained of them were clumps of brown leaves.
increase Over the years the bulbs gradually increase.
sprout | shrivel Get the bulbs into the ground, or they will begin to shrivel.

[TahlilGaran] Collocations Dictionary ▲

light something that produces light, especially electric light, to help you to see:
She switched the kitchen light on.
The lights in the house were all off.
lamp an object that produces light by using electricity, oil, or gas - often used in names of lights:
a bedside lamp
a street lamp
a desk lamp
a table lamp
an old oil lamp
a paraffin lamp
lantern a lamp that you can carry, consisting of a metal container with glass sides that surrounds a flame or light:
The miners used lanterns which were lit by candles.
torch British English, flashlight American English a small electric lamp that you carry in your hand:
We shone our torches around the cavern.
candle a stick of wax with a string through the middle, which you burn to give light:
The restaurant was lit by candles.
bulb the glass part of an electric light, that the light shines from:
a 100 watt bulb
an energy-saving light bulb
headlight (also headlamp) one of the two large lights at the front of a vehicle:
It was getting dark so she switched the headlights on.
sidelight British English, parking light American English one of the two small lights next to the main lights, at the front and back of a car
tail light one of the two red lights at the back of a vehicle
indicator British English, turn signal American English one of the lights on a car that flash to show which way the car is turning

[TahlilGaran] English Thesaurus ▲

plant a living thing that has leaves and roots and grows in earth, especially one that is smaller than a tree:
Don’t forget to water the plants.
Plants grow towards the sun.
Botanists examined plant species from around the world.
herb a small plant that is used to improve the taste of food, or to make medicine:
Sprinkle the dish with chopped fresh herbs.
medicinal herbs (=used as medicine)
The shop sells an interesting range of herbs and spices.
weed a wild plant growing where it is not wanted that prevents crops or garden flowers from growing properly:
She was pulling up weeds in her garden.
Herbicides can be used to prevent and control weeds.
bulb a root shaped like a ball that grows into a flower or plant:
She planted hundreds of daffodil bulbs.
shrub a small bush with several woody stems:
flowering shrubs
Rosemary is an evergreen shrub.

[TahlilGaran] English Thesaurus ▲