Definition of "line of business" []

• A particular kind of product or merchandise (noun)
• A particular kind of commercial enterprise (noun)

WordNet. Princeton University. 2010.

• "This substantial line of business was regulated by the colony to prevent abuses and the frontier violence that resulted; Willing was named to a nine-member Indian Affairs board that was empowered to finance the trade by borrowing private capital at 6 percent interest."
• "His reason for attempting this special line of business was that he had struck up an acquaintance with a consumptive tutor upon the voyage home, and that he had used this man's ability to make the undertaking a success."
• "I'll take long odds not only that he's on the Interpol files but also that he's an ex-big-time American racketeer who has been deported to Italy — and the line of business in which he used to specialise would make very interesting reading, because the criminal leopards, even the biggest cats in the jungle, never change their spots."