hall·mark 
/ˈhɑ:lˌmɑɚk/ noun
plural hall·marks /ˈhɑ:lˌmɑɚk/ noun [count] 1 : a quality, ability, etc., that is typical of a particular person or thing
▪ He had all the hallmarks of a great baseball player. ▪ Humor is one of the hallmarks of her style. ▪ The murder bore all the hallmarks of a serial killer's work. — compare earmark 2 : an official mark that is put on gold and silver objects in Britain to indicate their purity
▪ He had all the hallmarks of a great baseball player. ▪ Humor is one of the hallmarks of her style. ▪ The murder bore all the hallmarks of a serial killer's work. — compare earmark
