Definition of undertrick in English:

undertrick

noun

Bridge
  • A trick by which the declarer falls short of their contract.

    • ‘If just one player was up, that player gives each of the other players as many unwanted cards face down as they had undertricks.’
    • ‘If you take fewer tricks than you bid you lose one point for each undertrick.’
    • ‘If the bidder and partner fail they each pay 1 unit plus 1 per undertrick.’
    • ‘Thus, if the bid is 4 Hearts and the defenders only take nine tricks, they are penalized for one undertrick.’

Pronunciation:

undertrick

/ˈəndərˌtrik/