Hallmark/ˈhɔːlmɑːrk/ Definition 1 of 4Pro Tip 1/3Identifying Excellence Use 'hallmark' when pinpointing what makes something exceptionally good. Innovation is the hallmark of our company's products. Pro Tip 2/3Positive Quality 'Hallmark' often implies a positive aspect that stands out. Attention to detail is the hallmark of her craftsmanship. Pro Tip 3/3Not Always Physical The 'hallmark' can refer to intangible qualities, not just physical traits. Resilience is a hallmark of a strong character.