Meaning

Making profit or clear, in good.

Origin

From 20th-century America, tied to books; black ink for profit, slang by 1920s in a trade tale for up. A 1930s 'Wall Street Journal' uses it for a gain.

Usage Examples

  • We're in the black; profits up!
  • In the black; business booms.
  • Black ink; good year.

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