undertrick

[ uhn-der-trik ]
/ ˈʌn dərˌtrɪk /

noun Bridge.

a trick that a declarer failed to win in relation to the number of tricks necessary to make the contract.
Compare overtrick.

Origin of undertrick

First recorded in 1900–05; under- + trick

British Dictionary definitions for undertrick

undertrick
/ (ˈʌndəˌtrɪk) /

noun

bridge a trick by which a declarer falls short of making his contract