Answer: hallmark

AnswerCrossword Clue
HALLMARKGreeting card company
HALLMARKFigurative stamp of good quality.
HALLMARKStamp on gold and silver.
HALLMARKDistinguishing feature.
HALLMARKDistinguishing feature
HALLMARKIdentifying feature
HALLMARKCrayola's parent company
HALLMARKDistinguishing trait
HALLMARKDefining characteristic
hallmarkA mark stamped on articles of gold, silver, or platinum in Britain, certifying their standard of purity
hallmarkA distinctive feature, esp. one of excellence
hallmarkto mark with a official stamp