noun
escape hatch; escape door
Refers to a physical exit designed for emergency escape, such as in buildings, aircraft, or ships.
飛行機の脱出口は翼の上にある。
The escape hatch of the airplane is located over the wing.
火災の際は、この脱出口を使ってください。
In case of fire, please use this escape door.
Compound of 脱出 (escape) + 口 (opening, exit). The reading だっしゅつこう follows standard on'yomi.