IPA: /ˌkænəˈnɪr/
KK: /kænəˈnɪr/
A person who operates or manages a large gun, especially in the military.
The cannoneer skillfully aimed the artillery during the battle.
**Cannoneer** → It is formed from "cannon" (from Middle French *canon*, meaning a large gun or artillery piece) and "-eer" (meaning a person who). A cannoneer is a person who operates or works with a cannon.
Think of a person who works with a 'cannon' — that's what a cannoneer does.