Whippletree
Pronunciation : Whip"ple*tree`
Part of Speech : n.
Etymology : [See Whip, and cf. Whiffletree.]
Definition : 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. (Bot.)
Defn: The cornel tree. Chaucer.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder