muleback

== English == === Etymology === From mule +‎ back, after horseback. === Pronunciation === (UK) IPA(key): /ˈmjuːlbak/ === Noun === muleback (uncountable) The back of a mule. Coordinate terms: horseback, donkeyback, assback === Adverb === muleback (not comparable) On the back of a mule. Coordinate terms: horseback, donkeyback, assback