► 名詞裏口  [うらぐち]    
meaning:  door  rank: 3☆ 
家の裏口 ⇨ The back door of the house  
(☛ A back entrance)裏口  [うらぐち]    
meaning:  cheat  rank: 4☆ 
彼は
息子を
大学に裏口
入学させた ⇨ He put his son into a college through the back door (with money)  
(☛ Usually about buying one’s way to a prestigious college)