See also: call-boy king-nipper
- Clearly an extension of the British nipper "helper" (usually a youngster, from which is derived the slang sense "boy, lad").
- 1963  Only difference was when the nipper came down with the second bucketful of starters, that damned spot had grown up two inches.
- 1964  Another occupational term that bears the stamp of British origin is "nipper," a nipper being originally a boy brought into the coal mines, usually as his father's helper. To-day the nipper is an expediter of materials used in the mine.