Wiktionary
n. Any creature that moves by means of brachiation.
Wikipedia
Brachiators are a type of primate mostly from the family Hylobatidae, which includes gibbons. Brachiators use their arms to move from tree branch to tree branch, through a process called brachiation. Their arms are longer than their legs, and are much more powerful.
Usage examples of "brachiator".
Upon the platformlike shoulders of a large monoceroid quadruped rested a feathered flyer and a furry brachiator with well-developed hands.
The brachiator spoke a musical phrase, then translated into Interworld.
While the remaining Minids hooted at these inept brachiators, I went to Helen, lifted her to her feet, and led her back down the hillside to our tent.
But the Drall had evolved from exclusively ground-dwelling animals, not brachiators like the humans and the Wookiee.
They had set out on a field trip to a trade center bordering the jungle lands of the Hanging People -- brachiators, Louis gathered, who traded in nuts and dried fruit -- and the Herders, carnivores who dealt in leather goods and handicrafts.