heraldry an ordinary consisting of a horizontal band across a shield, conventionally occupying a third of its length and being wider than a bar
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
How to use fesse in a sentence
I bear azure powdered with trefoils or, with a lion's paw of the same armed gules in fesse.The Essays of Montaigne, Complete | Michel de Montaigne
But the coat they bore or assumed was a goodly one and simple, and therefore ancient—or, in fesse five lozenges azure.Cornish Characters | S. Baring-Gould
Of a similar origin is the fesse, a horizontal stripe across the middle of the shield, which represents a sash or military girdle.
Sire William Bernak, de argent, a une fesse and iij bernaks de sable.
Some families of Mascall bear barry of eight, others fleur-de-lis and a bordure, and the family of Mascule, a fesse.