firebox

名词 firebox:

1. a furnace (as on a steam locomotive) in which fuel is burned

fire.box

n.（名词）
A chamber, such as the furnace of a steam locomotive, in which fuel is burned.
火箱，燃烧室：一种燃料在里面燃烧的内室，例如蒸汽机车的燃烧室
A box containing a fire alarm.
火警匣：装有火警报警器的盒子