A small prominence, fold, or flap, particularly one resembling a cheek or chin; in animals, a chin-like projection or loose skin.
From Latin buccula, a diminutive of bucca (cheek or mouth), literally meaning 'little cheek' or 'little mouth,' used to describe small folds or projections of skin.
Ancient Roman soldiers wore chin guards called bucculae attached to their helmets to protect this exact spot—the Romans understood that the double chin area is surprisingly vulnerable in combat.
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