sealed room where deadly gases are released (suffocating and killing the persons or creatures inside the room)
instrument of execution consisting of a sealed chamber into which poison gas is introduced; used to kill people or animals
A gas chamber is a room that has been specially built so that it can be filled with poisonous gas in order to kill people or animals. A sealed enclosure in which condemned prisoners are executed by poison gas. a large room in which people or animals are killed with poisonous gas