old boy

past school friend, childhood friend; chum, my good buddy

Oldboy (Hangul:올드보이) is a 2003 South Korean film directed by Park Chan-wook. It is based on a Japanese manga of the same name written by Nobuaki Minegishi and Garon Tsuchiya. Oldboy is the second installment of Park's "Vengeance trilogy", preceded by Sympathy for Mr. Vengeance and followed by Sympathy for Lady Vengeance.
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Noun
1. a familiar term of address for a man
(synonym) old man
(hypernym) man, adult male
2. a vivacious elderly man
(hypernym) oldster, old person, senior citizen, golden ager
3. a male ex-pupil of a school
(hypernym) alumnus, alumna, alum, graduate, grad

old boy
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