Added 10 October 2026 oilfish noun Categories: AnimalsObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about oilfish at Wordnik → Where our words come from → A snake mackerel (Ruvettus pretiosus), having a high content of wax esters instead of glyceride oils. Origin From oil + fish. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: weatherfishescolarsoapfishhogfishsnakefishqueenfishhornfish Back to today's word