IPA: /ˈbloʊtɔːrtʃ/
KK: /ˈbloʊtɔːrʧ/
A tool that produces a very hot flame by mixing gas and oxygen, used for tasks like welding and soldering.
The plumber used a blowtorch to fix the pipes.
Blowtorch is formed from "blow" (from Old English "blāwan", meaning to breathe or blow) and "torch" (from Old French "torche", meaning a twisted bundle of fibers used for lighting). The word "blowtorch" refers to a tool that blows a flame, combining the action of blowing with the source of light or heat.
Think of 'blowing' ('blow') to create a flame from a 'torch' — that's how a blowtorch works.