doubletree
/ˈdʌb(ə)ltriː
/noun North American
A crossbar in front of a wagon with a swingletree at each end, enabling two horses to be harnessed.The doubletree on the wagon could be adjusted to allow one horse to pull more....
- The wheel horses pull on the doubletree against this hammerpin running through the wagon-tonque.
Origin
Mid 19th century: from double, on the pattern of singletree.
- walk something off
- walk test
- walk the boards
- walk the plank
- walk the streets
- walk the walk (also walk the talk)
- walk the wards
- walk-through
- orthopnoea
- orthopnoeic
- orthopod
- orthopoxvirus
- orthoprax
- orthopraxis
- orthopraxy
- orthopsychiatric
- orthopsychiatrist
- orthopsychiatry
- orthopter
- Orthoptera
- orthopteran
- orthopterist
- orthopteroid
- orthopterological
- orthopterology