Origin: 1350–1400; Middle English < Middle French ambler < Latin ambulāre to walk, equivalent to amb-ambi- + -ulāre to step (*-el- + stem vowel -ā-; cognate with Welsh el- may go, Greek elaúnein to set in motion)
late 14c., from O.Fr. ambler "walk as a horse does," from L. ambulare "to walk, to go about," a compound of ambi- "around" (see ambi-) and -ulare, from PIE base *el- "to go." Until 1590s used only of horses or persons on horseback.