from the GNU version of the Collaborative International Dictionary of English
- The exhaust pipe of a steam engine, or any pipe delivering steam or air, when so constructed as to cause a blast.
from The Century Dictionary and Cyclopedia
- n. The exhaust-pipe of a steam-engine. In locomotives and in some stationary steam-engines it is directed into the smoke-stack, with the effect of inducing a strong draft.
Sorry, no etymologies found.