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

 

strobe

 noun
noun
BrE BrE//strəʊb//
 
; NAmE NAmE//stroʊb//
 
(also strobe light)
 
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a bright light that flashes rapidly on and off, used especially at discos Word Origin 1940s: abbreviation of stroboscopic, from Greek strobos ‘whirling’.
See the Oxford Advanced American Dictionary entry: strobe