In heraldry, a narrow diagonal band crossing a shield, being a diminutive form of the 'bend' (a main heraldic charge).
From heraldic 'bend' plus the diminutive suffix '-let' (from Old French, meaning 'small'). Technical term in heraldry with medieval origins.
Medieval heraldry used geometry to encode family history—a bendlet instead of a full bend signified lineage relationships that anyone in a castle could 'read' at a glance!
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