noun
fire department headquarters; fire defense headquarters
Refers specifically to the central administrative office of a municipal fire department, not a local fire station.
消防本部は市役所の隣にあります。
The fire department headquarters is next to the city hall.
消防署 is a local fire station where firefighters and equipment are stationed, while 消防本部 is the central administrative headquarters overseeing multiple stations.
Compound of 消防 (firefighting) and 本部 (headquarters).