either of the pair of rafters carrying the part of a gable roof that projects beyond the gable wall.
Origin of barge couple
First recorded in 1555–65; see origin at bargeboard
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for barge couple
either of a pair of outside rafters along the gable end of a roof
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