Added 9 October 2026 cowpox noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about cowpox at Wordnik → Where our words come from → A viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox. Origin From cow + pox. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: vacciniapseudocowpoxvaccinehorsepoxkinepockcowpunchingcowponycowpokecowpathcowpoolcowpie Back to today's word