gairn, garon, garron noun a small, sturdy type of horse, mostly used for rough hill work, a Highland pony: But it was a typical horse of Argyle, a crofting horse in those days, a garron horse, fourteen hands maybe, maybe heavy built. It wasn’t a Clydesdale. la19-. etymology: Scots Gaelic gearran, Irish Gaelic gearrán; form garon also attested in Shelta; form garron attested by JS, SS, BW and DW