Search Result for "foster-brother": 
Wordnet 3.0

NOUN (1)

1. your foster brother is a male who is not a son of your parents but who is raised by your parents;
[syn: foster-brother, foster brother]



WordNet (r) 3.0 (2006):

foster-brother
    n 1: your foster brother is a male who is not a son of your
         parents but who is raised by your parents [syn: foster-
         brother, foster brother]