脑筋 (腦筋) nǎojīn
- 
              nǎojīn 
              noun 
              brains 
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '腦筋'; Guoyu '腦筋' 1) - 
              nǎojīn 
              noun 
              mind; way of thinking 
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '腦筋'; Guoyu '腦筋' 2) 
Contained in
- 死脑筋(死腦筋) inflexible thinking
 - 脑筋简单(腦筋簡單) simple minded
 - 豆渣脑筋(豆渣腦筋) idiot; porridge head
 - 动脑筋(動腦筋) to use one's brains; to think
 - 伤脑筋(傷腦筋) troublesome; bothersome