IPA: //ˈstriːtlaɪt//
KK: /ˈstritˌlaɪt/
A light that is mounted on a tall pole and is placed along streets to illuminate the area at night.
The streetlight flickered before going out completely.
Streetlight → It is formed from "street" (from Old English *strete*, meaning a paved way or road) and "light" (from Old English *leoht*, meaning illumination or brightness). The word "streetlight" refers to a light that illuminates a street or road.
Think of a 'paved way' ('street') being brightened by 'illumination' ('light') — that's what a streetlight does.