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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for undertrick



bridge a trick by which a declarer falls short of making his contract
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012