Определение coal gas в Английский Язык Английский Язык словарь
The poisonous gas, used domestically for cooking etc and formerly for lighting, prepared by heating coal with steam; it is a mixture of hydrogen and carbon monoxide; synthesis gas or town gas
[ 'kOl ] (noun.) before 12th century. Middle English col, from Old English; akin to Old High German & Old Norse kol burning ember, Middle Irish gúal coal.