iron horse

The lung, which he called his "old iron horse", allowed him to breathe.

“We are always near our ‘iron horses,’” said Ivan, the pilot, who is back on duty but not flying until he fully heals.

Since the 1950s, America’s once great “iron horse” has suffered under the exhaust fumes of the four-wheeler.

From their arrival in 1851, early settlers knew that hopes for a profitable future rode an iron horse.

The iron horse still rumbled through the tunnel when she woke.