IPA: //ˈsaɪd.laɪt//
KK: /ˈsaɪdˌlaɪt/
A light that comes from the side or additional information that is not the main focus.
The sidelights of the ship helped other vessels see it at night.
Sidelight → It is formed from "side" (from Old English *side*, meaning the lateral part) and "light" (from Old English *leoht*, meaning illumination). The word "sidelight" refers to light that comes from the side, often used in the context of windows or lighting fixtures.
Think of light coming from the 'side' — that's why 'sidelight' means light that shines from the side.