'Whiffletree' definitions:

Definition of 'whiffletree'

From: WordNet
noun
A crossbar that is attached to the traces of a draft horse and to the vehicle or implement that the horse is pulling [syn: whiffletree, whippletree, swingletree]

Definition of 'Whiffletree'

From: GCIDE
  • Whiffletree \Whif"fle*tree`\, n. Same as Whippletree. [1913 Webster]