Added 9 October 2026 houyhnhnms noun Categories: Mind & IdeasRare Words noun ! Definition from WordNet 3.1, Princeton University. More about houyhnhnms at Wordnik → Where our words come from → A land imagined by Jonathan Swift where intelligent horses ruled the Yahoos. Related Words: hoovenhyenashoocheshoolockhymettushoundshornbillhyaenahyoideanhohokamhylobates Back to today's word