singletree

The definition of a singletree is a bar between the pulling animal and the wagon or plow that balances the weight being pulled.

(noun)

An example of a singletree is a metal crossbar between a horse and a buggy.

See singletree in Webster's New World College Dictionary

noun

a wooden bar swung at the center from a hitch on a plow, wagon, etc. and hooked at either end to the traces of a horse's harness

Origin: altered (as if < single) < swingletree < ME swingle, rod, whip + tre, tree

See singletree in American Heritage Dictionary 4

noun

Origin:

Origin: Alteration (influenced by doubletree)

Origin: of swingletree

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