Definition of summer noun from the Oxford Advanced Learner's Dictionary

  

summer

 noun
noun
BrE BrE//ˈsʌmə(r)//
 
; NAmE NAmE//ˈsʌmər//
 
[uncountable, countable]
 
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  • the warmest season of the year, coming between spring and autumn/fall We're going away in the summer. It's very hot here in summer. in the summer of 2009 late/early summer this/next/last summer a cool/hot/wet summer It is now high summer (= the hottest part of summer). a summer’s day a summer dress the summer holidays/vacation two summers ago see also Indian summer
  • Word Origin Old English sumor, of Germanic origin; related to Dutch zomer, German Sommer, also to Sanskrit samā ‘year’.Extra examples I returned home for summer vacation. I went home for the summer holidays. Seville is scorching in high summer. She seems to be enjoying an Indian summer of popularity. There are two new courses being run in the summer term. We had an Indian summer that year, very warm until October. the extra light brought by British Summer TimeIdioms
    one swallow doesn’t make a summer
     
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    (saying) you must not take too seriously a small sign that something is happening or will happen in the future, because the situation could change