Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “half brother”

half brother

noun [C] /ˈhæf ˈbrʌð·ər/
a brother who has one of the same parents as you do, but whose other parent is different from yours
(Definition of half brother from the Cambridge Academic Content Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Word of the Day


to throw or drop something carelessly

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