Roundel is in Charges.
Roundel. A circular charge of solid colour. Depending on the colour different names are used.
Heraldry, Terms, Charges, Roundel, Bezant
Rolle Arms. Or, a fess dancetté between three billets azure each charged with a lion rampant of the first three bezants. Source.
Weston Arms. Ermine, on a chief azure five bezants.
Heraldry, Terms, Charges, Roundel, Hurt
Heraldry, Terms, Charges, Roundel, Plate
Bridgeman Arms. Sable, ten plates, four, three, two, and one, on a chief argent a lion passant ermines. Source
Lathom Arms. Or, on a chief indented azure three plates. Source.
Heraldry, Terms, Charges, Roundel, Torteau
Torteau. A roundel gules; from the French Torteau meaning tart.
York Arms.
England Edward III Arms a label three points argent on each point three torteau. Source.
Heraldry, Terms, Charges, Roundel, Three Torteaux
Courtenay Arms. Or, three torteaux. Source.
Dagworth Arms. Ermine, a fess gules three torteaux. Source.
Devereux Arms. Argent, a fess gules three torteaux in chief. Source.
Grey Arms. Barry of six argent and azure, in chief three torteaux. Source.
Wake Arms. Or, two bars gules in chief three torteaux. Source.