doubletree

Etymology

From double + tree.

doubletree means a device that connects two horses to a wagon or other implement. The tugs of a harness are connected to a singletree, two of which are connected to a doubletree, which, in turn, is connected to the implement. Lexicurio rates it Sui generis — a strength score of 90 out of 100.

noun

a device that connects two horses to a wagon or other implement. The tugs of a harness are connected to a singletree, two of which are connected to a doubletree, which, in turn, is connected to the implement.