signal definition, meaning - what is signal in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “signal”

See all translations

signal

noun [C] uk   us   /ˈsɪɡ.nəl/

signal noun [C] (ACTION)

B2 an action, movement, or sound that gives information, a message, a warning, or an order: When she gave (them) the signal, they all cheered. [+ that] The firework was a signal that the festival had started. [+ to infinitive] The police officer gave us a signal to stop. The signal for a race to start is often the firing of a gun. US (UK indicator) a turn signal
More examples

signal noun [C] (WAVE)

B2 a series of electrical or radio waves that are sent to a radio or television in order to produce a sound, picture, or message
More examples

signal noun [C] (SHOWING)

something that shows that something else exists or is likely to happen: The poor result is a clear signal of his deteriorating confidence. The changing colour of the leaves on the trees is a signal that it will soon be autumn.

signal noun [C] (EQUIPMENT)

equipment, especially on the side of a railway or road, often with lights, that tells drivers to stop, continue, or go more slowly: a railway signal a traffic signal a road signal

signal

verb uk   us   /ˈsɪɡ.nəl/ (-ll- or US usually -l-)

signal verb (ACTION)

C2 [I or T] to make a movement, sound, flash, etc. that gives information or tells people what to do: Flashing lights on a parked car usually signal a warning (to other motorists). He signalled left, and turned the lorry slowly. He was signalling (= giving a signal) with a red flag. She signalled for help. [+ that] She signalled to the cars behind that they were going the wrong way. [+ obj + to infinitive ] The children's mother signalled them to be quiet. [+ to infinitive] The children's mother signalled to/for them to be quiet.
More examples

signal verb (SHOW)

[T] to show that you intend or are ready to do something: [+ that] The union has signalled that the workers will strike. The union has signalled the workers' intention to strike. The death of Chairman Mao signalled (= marked) the end of an era in Chinese history.

signal

adjective [before noun] uk   us   /ˈsɪɡ.nəl/ formal
noticeable and unusual: a signal success/failure
(Definition of signal from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of signal?
Add Cambridge dictionaries to your browser to your website

Definitions of “signal” in other dictionaries

Word of the Day

Morse code

a system used for sending messages, in which letters and numbers are represented by short and long marks, sounds, or flashes of light

Word of the Day

The language of elections

by Liz Walter,
April 22, 2015
On May 7th, citizens of the UK will be going to the polls (having an election) to decide who will form the next government. This kind of election is known as a general election. The country is divided into 650 areas, called constituencies. Each constituency elects a member of parliament (MP) to

Read More 

e-juice noun

April 27, 2015
the liquid content in an e-cigarette, which includes nicotine and may be flavoured in various ways Cannabidiol oil that comes from industrial hemp plants, which is what is infused into our e-juice, is 100 per cent legal.

Read More