IPA: //ˈfleɪmˌθroʊər//
KK: /ˈfleɪmˌθroʊər/
A device that shoots out a burning stream of fuel, often used as a weapon.
The soldiers used a flamethrower to clear the enemy's hiding places.
Flamethrower → It is formed from "flame" (from Old English *flama*, meaning a fire or blaze) and "thrower" (from the verb "throw", meaning to propel or cast). The word "flamethrower" refers to a device that propels flames or fire.
Think of a device that 'casts' or 'propels' fire ('flame') — that's what a flamethrower does.
No commonly confused words.