roundel has definitions from the fields of heraldry,military,verse,writing
1
[ noun ] (military) round piece of armor plate that protects the armpit
2
[ noun ] (verse,writing) English form of rondeau having three triplets with a refrain after the first and third

Related terms

rondeau

3
[ noun ] (heraldry) a charge in the shape of a circle; a hollow roundel

Synonyms

annulet

Related terms

charge

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