horseback
advEtymology From Middle English horsebacke, horsebak, horsbak, equivalent to horse + back.
1
On the back of a horse.
noun, adv — 3 senses
US /ˈhɔɹsˌbæk/ · UK /ˈhɔːsˌbæk/
Etymology From Middle English horsebacke, horsebak, horsbak, equivalent to horse + back.
Usually, With on The back of a horse.
A ridge of sand, gravel, and boulders.
Etymology From Middle English horsebacke, horsebak, horsbak, equivalent to horse + back.
On the back of a horse.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.