腦殼

脑壳
nǎoké
  1. (coll.) head; skull
  2. (fig.) brains (mental capacity)

CEDICT

colloquial

Entry Composition

1 腦 nǎo
  1. brain
  2. mind
  3. head
  4. essence
2 殼 ké
  1. (coll.) shell (of an egg, nut, crab etc)
  2. case; casing; housing (of a machine or device)