\Un*seal"\, v. t. [1st pref. un- + seal.]
1. To break or remove the seal of; to open, as what is
   sealed; as, to unseal a letter.
         Unable to unseal his lips beyond the width of a
         quarter of an inch.                   --Sir W.
                                               Scott.
2. To disclose, as a secret. [Obs.] --The Coronation.