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warning light

warning light

7 3.2
A light that turns on in vehicles or machines to show a problem
  • noun
  • /ˈwɔrnɪŋ laɪt/
translation icon : luz de advertencia
  • The warning light turned on to alert me that the engine was overheating.
  • a red warning light
  • the warning light flashes
  • the warning light blinks

Now back inside, there are a lot of weird switches and warning lights and labels all over this vehicle.

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Examples

Synonyms

light
vswarning light
1.0

A device like a lamp or bulb that produces light

is specifically used to alert about danger, malfunction, or need for caution
flare
vswarning light
55 4.3

A small object that makes a very bright light to show your location

is an installed visual alert on equipment rather than a handheld emergency signal
warning sign
vswarning light
54 1.6

Something that shows there may be danger or a problem

is a direct visual alert that turns on to signal danger or malfunction
flashing light
vswarning light
14 2.0

A light that flashes to warn people, for example on ambulances or at crossings

is a visual alert used to signal danger rather than merely blinking
yellow light
vswarning light
  • US
6 1.8

A traffic signal that warns drivers to slow down and prepare to stop

is used on vehicles and equipment to signal faults, not only traffic rules
warning signal
vswarning light
5 3.2

A loud sound or flashing light that tells people there is danger

is a specifically visual alert rather than a sound or other alert
red light
vswarning light
2 1.7

A warning that something is wrong and you should stop or be careful

is a general equipment visual alert signaling malfunction or need for caution
warning device
vswarning light
1 3.7

A tool that makes a loud sound or bright light to tell people there is danger

is specifically a visual alert rather than any alerting tool
blinky
vswarning light
1 7.8

A small light that flashes to show a device is on or has a problem

is a larger visual alert used on equipment to signal danger or faults
danger signal
vswarning light
1 3.7

A sign that something dangerous may happen

is a specific visual alert used on vehicles and equipment to warn
amber light
vswarning light
  • UK
1 3.2

A yellow traffic signal that tells drivers to stop or go with caution

is a broader equipment or vehicle alert, not only a traffic color signal
warning bell
vswarning light
1 2.7

A bell that rings to warn people of danger

is a visual alert that signals problems rather than an audible alarm
idiot light
vswarning light
  • Specialized
8.4

A small lamp on a car dashboard that warns of a serious engine problem

is a general visual alert not limited to instrument panels

How Bright

beacon
66 4.3
strobe light
  • Specialized
6 3.7
warning light
7 3.2

Surface Forms

warning light singular

Morphology

warning + light

The meaning is directly and transparently derived from 'warning' (an alert about danger) modifying 'light' (a signaling device), so a learner who knows both words can infer it is a light that signals danger or malfunction. This noun+noun composition is a common, cross-linguistically familiar pattern seen in many languages and in technical contexts, making it immediately comprehensible to B1 learners.

Etymology

Warning light The term warning light comes from the small light on a car or machine that turns on to give a warning. When that bulb lights up it tells you there is 'danger' or a problem, so today it means a light that signals trouble and tells you to check or 'stop'.