What is another word for thill?
Pronunciation: [thˈɪl] (IPA) 
Thill, a word that dictionary defines as the shaft or bar on a cart or carriage to which the animal is fastened to pull, has several synonyms, mainly in British English. One of the most commonly used synonyms for thill is "shaft," referring to the long pole-like structure attached to a carriage or wagon. "Tongue" is another synonym that refers more specifically to the pole that connects the wagon to the animal. Some less common synonyms include "sprag," "spring-pole," and "yoke," which may have regional or historical significance. Regardless of the term used, they all refer to the structure that provides leverage and power for transportation.
