Definition of twinkling noun from the Oxford Advanced American Dictionary

 

twinkling

 noun
noun
NAmE//ˈtwɪŋklɪŋ//
 
[singular](old-fashioned)(informal)
 
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  • a very short time He was asleep in a twinkling.
  • Idioms
    in the twinkling of an eye
     
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    very quickly synonym in an instant Suddenly, in the twinkling of an eye, her whole life had been turned upside down.
    See the Oxford Advanced Learner's Dictionary entry: twinkling