A person that treats his friends or team like they are his actual biological brothers. He never puts himself above the rest and he always provides something for the team but not to expect anything in return.
Girl 1: Look it’s Apollonas Manolis And Markos!
Girl 2: I’ve heard that they are very close and caring as friends just like brothers!
Girl 1: That’s the reason we don’t toss the world “Adelfos” around for nothing