swingtree

From swing +‎ tree.

swingtree (plural swingtrees)

1. (dated) The bar of a carriage to which the traces are fastened.
   • 1858, James Slight, Robert Scott Burn, The Book of Farm Implements and Machines:

     In this mode of yoking, the horses work in unicorn-team, the middle horse pulling by the soam- chain, instead of the swingtree

• draft-bar
• singletree
• swingletree
• whiffletree
• whippletree

• “swingtree”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• westering