doubletree
1. [ noun ] a crossbar on a wagon or carriage to which two whiffletrees are attached in order to harness two horses abreast
Related terms: crossbar
Similar spelling:   doublet
  doubled
  double-date
  double_date
  doubleton
  Doubleday
  double_dye
  double-team
  double-dyed
  doublethink
  double_time
  double_talk
  double_take
  double_door
  doubleheader
  double-edged
  double_dutch
  double_digit
  double-decker
  double-dealer
  double_tongue
  double_dipper
  double_dagger