HOUYHNHNM

Houyhnhnm

(noun) one of a race of intelligent horses who ruled the Yahoos in a novel by Jonathan Swift

Source: WordNet® 3.1

Hou*yhnhnm", n.

Definition: One of the race of horses described by Swift in his imaginary travels of Lemuel Gulliver. The Houyhnhnms were endowed with reason and noble qualities; subject to them were Yahoos, a race of brutes having the form and all the worst vices of men.

Source: Webster’s Unabridged Dictionary 1913 Edition