noun
ladder truck; hook-and-ladder truck
A fire engine equipped with a large extendable ladder, used for reaching high places during firefighting or rescue operations.
火事の現場にはしご車が到着した。
A ladder truck arrived at the scene of the fire.
消防車 is a general term for a fire engine, while はしご車 specifically refers to a fire truck with a ladder.
Compound of はしご (ladder) and 車 (vehicle).