hallmark

1 a device, design, or figure used as an identifying mark <the hallmark of the Primrose Pottery Works is the small rose emblem etched on each piece> Synonyms ensign, emblem, impresa, logo, symbol, totem, trademarkRelated Words attribute, icon (also ikon), pictograph; logogram, logograph; badge, coat of arms, cognizance, crest, insignia, monogram; colophon, stamp, token

2 something that sets apart an individual from others of the same kind <regards kindness and gentleness as the hallmarks of a real man> Synonyms affection, attribute, attribution, character, criterion, diagnostic, differentia, feature, fingerprint, characteristic, mark, marker, note, particularity, peculiarity, point, property, quality, specific, stamp, touch, traitRelated Words badge, indication, sign; emblem, symbol, token; charm, grace; excellence, merit, virtue; eccentricity, idiosyncrasy, oddity, quirk; individuality, singularity, uniqueness