little brother

1. 1.

   a younger brother

   “my little brother just had his 50th birthday”

   Broaderbrother

Questions about little brother

What does little brother mean?

little brother means "a younger brother".

Is little brother a common word?

little brother is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.