Of a mule, horse, etc.: ambling.

Of a horse or other quadruped: that ambles or is ambling (amble, v. 1a); spec. that is inclined to amble, esp. in preference to trotting.

Of a horse or other animal: = ambling, adj. 1.

Of a horse: moving at a rack (rack, n.6); accustomed to move at a rack. Also of a horse's gait or pace, and in extended use.

That paces (in various senses of the verb).

Of a hound: Not easily diverted from the scent. Of a horse: Not nervous, skittish, or excitable; also (cf. A. 4), that travels at a moderate and even…