'Singletree' definitions:

Definition of 'Singletree'

From: GCIDE
  • Singletree \Sin"gle*tree`\, n. [Cf. Swingletree.] The pivoted or swinging bar to which the traces of a harnessed horse are fixed; a whiffletree. [1913 Webster]
  • Note: When two horses draw abreast, a singletree is fixed at each end of another crosspiece, called the doubletree. [1913 Webster]