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

 

sunstroke

 noun
noun
BrE BrE//ˈsʌnstrəʊk//
 
; NAmE NAmE//ˈsʌnstroʊk//
 
[uncountable] The sun and the moon
 
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an illness with fever, weakness, headache, etc. caused by too much direct sun, especially on the head See related entries: The sun and the moon
See the Oxford Advanced American Dictionary entry: sunstroke