What does THILL mean?

Here is the dictionary-style entry for "thill": thill

1. Parts of Speech: noun
2. Definitions: (1) either of the two long shafts between which an animal is fastened when pulling a wagon or plow; (2) the front part of a plow that cuts the furrow
3. Pronunciations: (US: /θɪl/, UK: /θɪl/)
4. Origin and Usage: The word "thill" comes from the Old English "thel," meaning "plank." It has been used since the 14th century to refer to the shafts that attach an animal to a wagon or plow. It is still used in modern English to describe this part of a vehicle.
5. Synonyms: shaft, pole, tongue, yoke
6. Related Words: wagon, plow, hitch, trace, reins
7. Example Sentences:
   • The farmer hitched the horse to the thill and began plowing the field.
   • He lifted the plows thill to turn it around at the end of the row.
   • The wagons thills were made of sturdy oak.