cart horse

In a few minutes we heard Tweedler's cart-horse tread, as he came through the lobby, with two books in his hand.

The colts who live here are very good colts, but they are cart-horse colts, and of course they have not learned manners.

But a cart-horse might as well hope to gallop away from a thorough-bred racer as that ship to outsail the Jean Bart.

My two ponies were the only occupants of my stable except a cart-horse.