lethal chamber

noun

a room or enclosure where animals may be killed by exposure to a poison gas.

Origin of lethal chamber

First recorded in 1880–85

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lethal chamber

Historical Examples of lethal chamber

This is to be used for the “lethal-chamber,” where the specimens are to be sent to sleep, but not to “awake refreshed.”
Three Hundred Things a Bright Boy Can Do
Anonymous