Wiktionary
n. (plural of steam tunnel English)
Usage examples of "steam tunnels".
Rosemary had followed some derelicts into the steam tunnels beneath Grand Central Station.
I wondered how close we actually were to the steam tunnels which must be the source of the hum.
On the bottom of the panel is a faint line of discoloration, the high-water mark of an old flood from the steam tunnels coiled just beneath the basement floor, a stain unpainted since Taft’.
It was open, and as flat and silvery and empty as the dime that the steam tunnels wouldn't cost him.
William Sloane Coffin, Freshmen Counselors, the legend of Brian Bowling, Politics in the English department, the steam tunnels, Grove Street Cemetery.
Charlie and Gil were somewhere below our feet, playing paintball in the steam tunnels with a group of friends from Ivy and the EMT squad.