soursa

soursa [ME sours, souse, AN souse], (arch.) supporting bracket, corbel. 1302 in xlix clavis, viij sursis, et aliis particulis volture depinguendis Fabr. Exon. 24; 1333 pro c bordis de bech' ‥ emptis pro ~a del reredos in gabla orientali cooperand' (Works) KR Ac 469/12 m. 19.