1. The amount by which the cost of a business exceeds its revenue
   "The company's financial report showed significant red ink in the fourth quarter";
   - loss, red

1. Mark with red ink
   "red-ink the area that is restricted"

Derived forms: red-inking, red-inked, red inks, red-inks

Type of: amount, amount of money, ink, sum, sum of money

Encyclopedia: Red ink