tank engine
tank locomotive

Since then other tank engines around the world have been dressed up as Thomas.

They were isolated systems using small tank engines, like 4-4-2Ts.

The 0-6-4 wheel arrangement appears to have only been used on tank engines.

The following year a number of orders were fulfilled for tank engines among other equipment.

One said he believed it was a malfunctioning tank engine.

The thunder of the big tank engines made the ground tremble.

They can supply you anything from a washer bag to a tank engine.

Thomas is a tank engine, painted blue with red lining, and displays the running number one.

He designed several classes of tank engines, including large 4-2-4T locomotives.

Neil is a small green tank engine with an unusual box shape and no cab.