Welcome to the new LearnersDictionary.com. We want to hear your thoughts about the new design.


Learner's definition of LIGHT  
[noncount]  : the form of energy that makes it possible to see things : the brightness produced by the sun, by fire, a lamp, etc. — sometimes used figuratively
: a source of light (such as an electric lamp)
— see also nightlight
   b  : a light on a vehicle
[singular]  : a way of showing or understanding something or someone
[count]  : a light or set of lights used to control traffic : traffic light
[singular]informal  : a flame for lighting a cigarette
[noncount]formal  : daylight 1
— see also see the light of day (below)
[singular]  : a quality in a person's eyes that shows emotion
lights [plural] 
: light colors : colors that are more white than black
   b  : light-colored clothes

according to your lights

: according to your idea of what is right

a light at the end of the tunnel

: a reason to believe that a bad situation will end soon or that a long and difficult job will be finished soon

bring (something) to light

: to tell people about (something) : to make (something) known

cast/shed/throw light on

: to help to explain (something) : to make it possible to understand or know more about (something)

come to light

: to become known

hide your light under a bushel

— see bushel

in someone's light

: blocking the light that someone needs to see or read something

in the cold light of day

— see 1cold

in the light of

or USin light of
: while thinking about (something that affects the way you see or understand things)
: because of (something)

light dawns

◊ When people suddenly understand something that they had not understood before, (a/the) light dawns (on them).

more heat than light

— see 1heat

out like a light

: asleep
: unconscious

punch someone's lights out

— see 1punch

see the light

: to suddenly understand or realize the truth of something

see the light of day

: to be seen or used
: to become publicly known

set light to

chiefly British
: to cause (something) to begin burning

the light of your life

: a person you love very much and who makes you happy

trip the light fantastic

— see 2trip
— see also green light, leading light, northern lights, southern lights, sweetness and light at sweetness
Learner's definition of LIGHT  
: not dark or deep in color : pale
: having a lot of light : bright
   b  : having the light of the day
— compare 4light
Learner's definition of LIGHT  
[+ object]  : to provide light for (something)
[+ object]  : to cause (something) to burn
— see also light up 3 (below)
   b  [no object]  : to begin to burn

light a fire under (someone)

US, informal
: to cause (someone) to move or work more quickly and effectively

light into

[phrasal verb]
light into (someone)US, informal 
: to attack or criticize (someone) forcefully

light on/upon

[phrasal verb]
light on/upon (something) 
: to find or see (something) by chance

light out

[phrasal verb]US, informal
: to leave in a hurry for someplace

light up

[phrasal verb]
of a light  : to become lit : to begin shining — often used figuratively
   b  informal, of a telephone  : to show a light indicating that someone is calling
light (something) up or light up (something)  : to provide light for (something) : to fill (something) with light — often used figuratively
informal  : to light a cigarette
Learner's definition of LIGHT  
: not heavy : having little weight or less than usual weight
   b  : small in size and weight
: less in amount or degree than usual
   b  : not strong or violent : moderate
   c  : not great or large
   d  : not difficult to accept or bear : not harsh or severe
   e  : slight or minor in degree or effect
— opposite heavy
: not involving a lot of physical effort
— opposite heavy
: not loud or forceful
— opposite heavy
: not important or serious : intended mainly for entertainment
— opposite heavy
: not dense and thick
— opposite heavy
: made with thin cloth and not very warm
— opposite heavy
: eating, drinking, or using a small amount of something
   b  : producing a small amount of something
   c  : not done often or in large amounts
— opposite heavy
: not having a large amount of food : not making your stomach feel full
   b  : made with fewer calories or with less of some ingredient than usual
   c  : not rich, dense, or thick
— opposite heavy
10  : designed to carry a small load or few passengers
   b  : not as large and powerful as other weapons, machines, etc.
   c  of a group of soldiers  : having fewer and smaller weapons and less armor than other groups but able to move quickly

light on

: having or using a small amount of (something)

light on your feet

: capable of moving in a quick and graceful way

light sleeper

: someone who wakes up easily

make light of

: to treat (something, such as a problem) in a joking way : to not be serious about (something important)
— compare 2light

— lightness

Learner's definition of LIGHT  

eat light

: to eat foods that will not cause you to gain weight

travel light

: to travel with little baggage
Comments & Questions  
Comments & Questions
What made you want to look up light? Include any comments and questions you have about this word.