signal Meaning in Cambridge American English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "signal" - American English Dictionary

See all translations

signalnoun [C]

 us   /ˈsɪɡ·nəl/

signal noun [C] (ACTION)

an action, movement, or sound that gives information, a message, a warning, or an order: I tried to call but kept getting a busy signal. When the lieutenant gave the signal, five police officers charged into the apartment. In retrospect, looking at how she was acting, we should have been able to recognize the danger signals. A signal is also a device, often with lights, that shows people or vehicles whether to stop, go, or move carefully.

signal noun [C] (WAVE)

a series of energy waves that carry a sound, picture, or other information: a low-frequency radio signal

signaladjective

 us   /ˈsɪɡ·nəl/ fml

signal adjective (IMPORTANT)

unusual and important: You performed a signal service to our people, and we wish to express our gratitude.

signalverb [I/T]

 us   /ˈsɪɡ·nəl/

signal verb [I/T] (MAKE MOVEMENT)

to make a movement, sound, etc. that gives information or tells people what to do: [I] When you learn to drive, you are told that you have to signal before you turn right or left. [T] The police officer signaled us to stop.
(Definition of signal from the Cambridge Academic Content Dictionary © 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
hurdle

a frame or fence for jumping over in a race

Word of the Day

When’s dinner? (Words for different meals)
When’s dinner? (Words for different meals)
by Kate Woodford,
July 22, 2015
Here at ‘About Words’ we’re always happy to get ideas for posts that we could write. A reader of this blog recently asked for a post on the language of meals and we thought this an excellent idea. If you are reading this post and have an idea for a topic or

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More