What is another word for swingletree?
Pronunciation: [swˈɪŋɡə͡ltɹˌiː] (IPA) 
Swingletree is a term used to describe a horizontal wooden or metal bar that is attached to the traces of a horse-drawn vehicle, such as a wagon or carriage. Alternate names for a swingletree include whippletree, equalizer bar, singletree, or even "evener." In some cases, regional dialects or variations in terminology may also result in unique names for this important piece of equipment. Regardless of what you call it, the swingletree serves a critical function in keeping the wagon or carriage stable and balanced as it moves over rough terrain or around tight turns. So, whether you're talking about a whippletree or a singletree, the important thing is that it helps keep horse-drawn transportation rolling smoothly.
