Home › Words › O › onelingonelingoneling means A singleton; maverick; a single or only child.EtymologyFrom one + -ling. Cognate with Dutch eenling, German Einling.nounA singleton; maverick; a single or only child.e.g.“Considering how she was humoured, when a oneling, I think her behaviour is extraordinary.” — 1823, John Cole, Herveiana:Definitions & examples from Wiktionary (CC BY-SA 3.0).