big smoke
n.— «The “big train” has reached the end of the road.…Walter Johnson somewhat sadly admitted today that he was through.…Twice now the “big smoke” has started in the series.» —“‘The Old Gray Mare Ain’t What She Used to Be,’ Says Walter Johnson, Twice Defeated Pitcher” by George Barry Clearfield Progress (Pa.) Oct. 10, 1924. (source: Double-Tongued Dictionary)