Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “old boy”

old boy

noun (OLD MAN)   
[C] mainly UK informal an old man: the old boy next door The elderlyOld or old-fashionedDescribing people who are old [as form of address] old-fashioned a way that some men address male friends that they have known for many years : Come on, old boy , drink up.The elderlyOld or old-fashionedDescribing people who are old
(Definition of old boy noun (OLD MAN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of old boy

Translations of “old boy”

Word of the Day


the skill or activity of preparing and cooking food

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More