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English definition of “sign”

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sign

noun [C]
 
 
/saɪn/
PROOF B1 something that shows that something is happening: Flowers are the first sign of Spring. [+ (that)] It's a sign that things are improving. Staff are showing signs of strain.Showing and demonstrating
NOTICE A2 a symbol or message in a public place that gives information or instructions: a road sign a 'no-smoking' signInformation and messages
SYMBOL B2 a symbol that has a particular meaning: a dollar/pound sign the sign of the crossSigns, signals and symbolsSpecific signs and symbols
MOVEMENT B1 a movement you make to give someone information or tell them what to do →  See also star sign Gestures and gesturing in general
(Definition of sign noun from the Cambridge Learners Dictionary © Cambridge University Press)
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