(in tennis, squash, handball, etc.) two faults in succession, resulting in the loss of the point, the loss of the serve, or both.
Origin of double fault
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the serving of two faults in succession, thereby losing a point
(intr) to serve a double fault
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