From Longman Dictionary of Contemporary Englishhomeboyhome·boy /ˈhəʊmbɔɪ $ ˈhoʊm-/ noun [countable] American English informalFRIEND a friend or someone from the same area or gang as you – used especially by young people
Examples from the Corpus
homeboy• On or off-screen, there's no difference between him and the capital's hip hop homeboys.• A brace of homeboys in headbands and the Count of Monte Cristo.• The homeboys who should be amongst Dance Energy's most loyal followers diss him.• Much beloved of New York homeboys, the Cuccini hat looks set to replace the old school Kangol. 