To amble: said of a horse; also, to ride at this gait. (unknown)
An amble. (noun)
The Century Dictionary (Public Domain)
Use "tripple" in a sentence
"Having pitched his laager, the commander sends out his scouts; some amble off on horseback at a pace they call a "tripple" -- a gait which all the Boers educate their nags to adopt."
"The AN / TTC-56 (V) 1 Single Shelter Switch (or simply called the tripple-S by Army personnel) is a mobile HMMWV mounted telephone and data carrying modular switch, capable of providing both nonsecure and secure communications in a field environment."
"He has to walk, trot, canter, gallop, and "tripple" all around the laager several times, amidst the badinage and laughter of the burghers, and he gets enough "chaff" during the journey to last the biggest horse in England a lifetime."