腦筋

脑筋
nǎojīn
  1. brains
  2. mind
  3. head
  4. way of thinking

CEDICT

Entry Composition

1 腦 nǎo
  1. brain
  2. mind
  3. head
  4. essence
2 筋 jīn
  1. muscle
  2. tendon
  3. veins visible under the skin
  4. sth resembling tendons or veins (e.g. fiber in a vegetable)