whiffletree

[ hwif-uh l-tree, wif- ]
/ ˈʰwɪf əlˌtri, ˈwɪf- /
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noun Northern U.S.

a crossbar, pivoted at the middle, to which the traces of a harness are fastened for pulling a cart, carriage, plow, etc.
Compare doubletree.

Origin of whiffletree

First recorded in 1820–30; variant of whippletree
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for whiffletree

whiffletree

/ (ˈwɪfəlˌtriː) /

noun

another name (esp US) for swingletree

Word Origin for whiffletree

C19: variant of whippletree
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012