horseback

[ hawrs-bak ]
/ ˈhɔrsˌbæk /

noun

the back of a horse.
Geology. a low, natural ridge of sand or gravel; an esker.Compare hogback.

adverb

on horseback: to ride horseback.

adjective

made or given in a casual or speculative way; approximate or offhand: a horseback estimate on the construction costs.

Origin of horseback

1350–1400; Middle English. See horse, back1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for horseback

British Dictionary definitions for horseback

horseback

/ (ˈhɔːsˌbæk) /

noun

  1. a horse's back (esp in the phrase on horseback)
  2. (as modifier)horseback riding
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012