A circular ornament, often decorated with sculptural reliefs or glazed terracotta.
In heraldry - a disc, the name of which varies according to its tincture.
This is one of a series of specialised Latin terms that have developed since the 12th century AD to describe different elements of coats of arms commonly used in heraldry.
![Roman mount probably portraying Silenus from Besthorpe. Roman mount probably portraying Silenus from Besthorpe.](http://hbsmrgateway2.esdm.co.uk/norfolk/DataFiles/FullImages/1242.jpg)
Roman mount, or roundel, probably portraying Silenus from Besthorpe. (© NCC)