IPA: /ˈtɔːrʧlaɪt/
KK: /ˈtɔːrtʃlaɪt/
A small, portable light source that is powered by batteries and used to illuminate dark areas.
I used a torchlight to find my way in the dark cave.
Torchlight → It is formed from "torch" (from Old French *torche*, meaning a twisted bundle of fibers used for lighting) and "light" (from Old English *leoht*, meaning illumination or brightness). The word "torchlight" refers to the light produced by a torch.
Think of a 'twisted bundle' ('torch') that gives off 'illumination' ('light') — that's what torchlight means.