Plural of fesse; multiple horizontal bands on heraldic shields, or third-person singular present tense of the verb 'fess.'
The noun plural follows standard English pluralization from the French 'fesse,' while the verb form adds '-es' to 'fess' following regular conjugation patterns.
A shield with multiple fesses (called 'fesses gemelles' when paired) creates a distinctly different visual effect than a single band, and medieval heralds would have immediately recognized what family or region you represented.
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