Wiktionary
town gas
n. (context petrochemistry English) a poisonous manufactured gas, supplied to domestic consumers for heating, cooking and (formerly) lighting; it is a mixture of carbon monoxide and hydrogen formed by the reaction of coke with steam - C + H2O => CO + H2
WordNet
town gas
n. coal gas manufactured for domestic and industrial use
Usage examples of "town gas".
From his greasy coveralls they assumed he ran the town gas station.