► 名詞内輪  [うちわ]    
meaning:  inside  rank: 2☆ それは内輪の
話であなたには
関係無い ⇨ That’s an inside issue and not your business  
(☛ A small group of familiar people)☆ 内輪の
冗談 ⇨ An inside joke  
(☛ A small group of familiar people)More examples:- 政党内の内輪もめ ⇨ Infighting within a political party