1 definition by Raven Grace

Top Definition
Chiefly British.

1. one of a kind; unique.
2. done, made, or happening only once.
3. a one night stand.
4. something done, made, or happening only once.

This began as a British expression but is now known in the US and elsewhere.
Eddie: Say what?! You base-jumped off the Empire State Building? Were you insane?!

Johnny: Hey, it was only a one-off. I was a turk lad at the time and a little drunk, and I don't think I'd ever have the courage to do it again.
by Raven Grace October 23, 2007
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