horseback
1. [ noun ] the back of a horse
Related terms: body_part horse
2. [ adverb ] on the back of a horse
Synonyms: ahorseback ahorse
Examples:

"he rode horseback to town" "managed to escape ahorse" "policeman patrolled the streets ahorseback"

3. [ noun ] (geography) a narrow ridge of hills
Synonyms: hogback
Related terms: ridge
Similar spelling:   horse_bean
  horsebox
  horseplay
  horsebean
  horseflesh
  horsebrier
  horse_barn
  horse_balm