D defs.my
Entry 1 sense Webster, 1913

Bareback

/(bâr"băk`)/ · Bare·back · IPA /ˈbɛɚbæk/
01 adv. On the bare back of a horse, without using a saddle; as, to ride bareback.
  1. 1.
    On the bare back of a horse, without using a saddle; as, to ride bareback.