swingletree

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a crossbar that is attached to the traces of a draft horse and to the vehicle or implement that the horse is pulling
• Syn:
whiffletree, whippletree
• Hypernyms:
crossbar

• Từ đồng nghĩa / Synonyms:
  whiffletree, whippletree