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Noun: old boy  ówld boy
  1. A familiar term of address for a man
    - old man
  2. A vivacious elderly man
  3. A former male pupil of a school

Derived forms: old boys

Type of: adult male, alum, alumnus, golden ager, grad, graduate, man, old person, oldster [N. Amer], senior citizen

Encyclopedia: Old boy