poison gas

Definitions

1. A poisonous gas.
   countable, uncountable
2. Any poisonous gas used as a chemical weapon.
   countable, uncountable

Equivalents

Examples

“[...] approximately 23,000 members of the L.M.S.R. staff were trained in methods approved by the Home Office for dealing with the consequences of an air raid, including the effects of poison gas and incendiary bombs.”

CEFR level