密封

mìfēng
to seal up

CEDICT

Entry Composition

1 密 mì
  1. dense; close; thick
  2. intimate; close
  3. (bound form) secret; confidential
  4. (Internet slang) to send a private message to (sb); to DM
2 封 fēng
  1. to confer
  2. to grant
  3. to bestow a title
  4. to seal
  5. classifier for sealed objects, esp. letters