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signal

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1signal/ˈsɪgnl̟/noun
pluralsignals
1signal
/ˈsɪgnl̟/
noun
pluralsignals
Learner's definition of SIGNAL  
[count]
: an event or act which shows that something exists or that gives information about something : sign — often + of
: something (such as a sound, a movement of part of the body, or an object) that gives information about something or that tells someone to do something
: a piece of equipment with colored lights that is used on railways and roads to tell people when to go, to slow down, or to stop
technical 
: a message, sound, or image that is carried by waves of light or sound
   b  : a wave of light or sound that carries a message, sound, or image

busy signal

— see 1busy

mixed signals

— see mixed
2signal/ˈsɪgnl̟/verb
signalsUSsignaledor BritishsignalledUSsignalingor Britishsignalling
2signal
/ˈsɪgnl̟/
verb
signalsUSsignaledor BritishsignalledUSsignalingor Britishsignalling
Learner's definition of SIGNAL  
[+ object]  : to be a sign of (something) : to show the existence of (something)
: to make a sound or motion that tells someone something
[no object]
[+ object]
3signal/ˈsɪgnl̟/adjective
3signal
/ˈsɪgnl̟/
adjective
Learner's definition of SIGNAL  
always used before a nounformal
: very important or great : significant

— signally

/ˈsɪgnəli/adverb
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