old boy

English Thesaurus

1. a vivacious elderly man (noun.person)

hypernym	:	golden ager, old person, oldster, senior citizen,
definition	:	an elderly person (noun.person)

2. a former male pupil of a school (noun.person)

hypernym	:	alum, alumna, alumnus, grad, graduate,
definition	:	a person who has received a degree from a school (high school or college or university) (noun.person)

3. a familiar term of address for a man (noun.person)

hypernym	:	adult male, man,
definition	:	an adult person who is male (as opposed to a woman) (noun.person)