oncer

/ ˈwʌnsə /

noun

1. (formerly) a one-pound note
2. a person elected to Parliament who can only expect to serve one term
3. something that happens on only one occasion

Word History and Origins

Origin of oncer¹

C20: from once

Example Sentences

Breakfast on the day of the Sledge Game was a oncer.

From Literature

The Labour tribe will respond by lobbying for a reissued oncer portraying Wilson, above the strapline "the pound in your pocket".

From The Guardian