封閉

封闭
fēngbì
  1. to close; to seal off
  2. to close down (an illegal venue)
  3. closed (i.e. isolated from outside input)

CEDICT

Entry Composition

1 封 fēng
  1. to confer
  2. to grant
  3. to bestow a title
  4. to seal
  5. classifier for sealed objects, esp. letters
2 閉 bì
  1. to close
  2. to stop up
  3. to shut
  4. to obstruct