封锁

封鎖
fēngsuǒ
  1. to blockade
  2. to seal off
  3. to lock down

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 锁 suǒ to lock; to lock up

classifier: 把
=2 锁 suǒ old variant of 锁 suǒ