Found 2 items, similar to doubletree.
English → English (WordNet) Definition: doubletree doubletree n : a crossbar on a wagon or carriage to which two whiffletrees are attached in order to harness two horses abreast
English → English (gcide) Definition: Doubletree Doubletree \Dou"ble*tree`\, n. The bar, or crosspiece, of a carriage, to which the singletrees are attached. [1913 Webster]