Whippletree

Part of speech: noun (n.)

1. The pivoted or swinging bar to which the traces, or tugs, of a harness are fastened, and by which a carriage, a plow, or other implement or vehicle, is drawn; a whiffletree; a swingletree; a singletree. See Singletree. [People] cut their own whippletree in the woodlot. Emerson.

2. The cornel tree. Chaucer.