The definition of a hallmark is a sign of excellence, high quality or a distinguishing feature.
(noun)An example of a hallmark to a successful deli is freshly prepared food.
See hallmark in Webster's New World College Dictionary
noun
transitive verb
See hallmark in American Heritage Dictionary 4
noun
Origin:
Origin: After Goldsmith's Hall in London, England, where gold and silver articles were appraised and stamped
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