English: Westmister Abbey
Welsh: Abaty Westminster
Subject: Crefydd
Welsh definition: Westminster Abbey, formally titled the Collegiate Church of St Peter at Westminster, is a large, mainly Gothic abbey church in the City of Westminster, London, England, just to the west of the Palace of Westminster. It is one of the United Kingdom's most notable religious buildings and the traditional place of coronation and burial site for English and, later, British monarchs.
Notes: Nid yw'n gywir cyfeirio at yr Abaty fel "San Steffan" yn Gymraeg, gan mai cyfeirio at Gapel San Steffan ym Mhalas San Steffan (Westminster Palace) y mae'r enw hwnnw.