Whippletree
"Whippletree" in a Sentence (3 examples)
The single whippletree should have a chain attached to bring it out even with the other two.
Like the whippletree, the wheelbarrow only became known in the Middle Ages.
Note the two-horse whippletree on the beam at the lower left. (A whippletree, of which this is the simplest possible, balances the load on the animals.)