one-off - definition of one-off by The Free Dictionary
one-off (wŭn′ôf′, -ŏf′) adj. Happening, done, or made only once. n. Something that is not repeated or reproduced. one-off n 1. a. something that is carried out or made only once b. (as modifier): a one-off job. [See off (sense 15)] one′-off` Chiefly Brit....