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. <botany> The cornel tree.

See: Whip, and cf. Whiffletree.

(01 Mar 1998)