Compounds of 兄

• 御兄ちゃん
  (n) (1) (fam) familiar form of "older brother"
  (2) (fam) form of address for young adult male
  mister
• 従兄弟違い
  (n) parent's cousin
  first-cousin once removed
• 兄弟牆に鬩ぐ
  (exp,v5g) sibling rivalry
  quarrel among friends
• 欲張り兄さん
  (exp) greedy materialistic older brother
  dirty old man
• 義理のお兄さん
  (n) one's brother-in-law
• 兄貴風を吹かす
  (exp) to act patronizingly
• 兄弟の義を結ぶ
  (exp) become sworn brothers
• 兄たり難く弟たり難し
  (exp) there is little to choose between the two
  they're both about the same