Houyhnhnm
Pronunciation : Hou*yhnhnm"
Part of Speech : n.
Definition : Defn: 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