sealed

verb

1. (form-of, participle, past)simple past and past participle of seal

adj

1. (not-comparable)Closed by a seal (something to prevent leakage).

   “Now we are liberal with our innermost secrets, spraying them into the public ether with a generosity our forebears could not have imagined. Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet.”

2. (not-comparable)Preventing entrance.
3. (not-comparable)Of a road: having an asphalt or macadamised surface.
4. (not-comparable)Not subclassable; from which one cannot inherit.