Definition of business double in English:

business double

noun

Bridge
  • A double made with the intention of increasing the penalty points scored by a partnership if they defeat their opponents' contract.

    Often contrasted with take-out double
    • ‘S.J. Simon suggested that a double of a low-level overcall be a proposal to partner, a tentative business double, no more a command that opener pass than a new-suit response is a command that opener play in responder's suit.’
    • ‘Tentative business doubles, as explained by Simon and Miles, were a significant improvement upon Colonel Blimp Doubles, but they suffered from two defects.’