► 名詞下半身  [(2)かはんしん]    
meaning:  body  rank: 2☆ 
彼は
交通事故で下半
身不随になった ⇨ He got paralyzed from the waist down in a car accident  
(☛ The lower body)下半身  [(2)かはんしん]  [euphemism]    
meaning:  sex  rank: 2☆ 下半身の
話題 ⇨ A topic about the lower body, sex
More examples:- あいつは下半身がだらしない ⇨ He is undisciplined in the lower body. He is very promiscuous
 - 彼は事故で下半身不随になった ⇨ He became paralyzed waist down in an accident
 - 彼は事故で下半身が麻痺した ⇨ He got paralyzed waist down in an accident