oner noun.
['wʌnǝ] M19.[from ONE adjective, noun, & pronoun + -ER1.]1. A person or thing of a unique or remarkable kind;
esp. a person keen on or expert at something.
slang.
M19.2. A single thing;
spec. one pound (of money).
colloq. L19.in a oner in one go.
■ G. F. Newman Worth a oner to you. [TahlilGaran] English Dictionary ▲