seal

seal (http://definr.com/seal)

     n 1: fastener consisting of a resinous composition that is
          plastic when warm; used for sealing documents and
          parcels and letters [syn: sealing wax]
     2: a device incised to make an impression; used to secure a
        closing or to authenticate documents [syn: stamp]
     3: the pelt or fur (especially the underfur) of a seal; "a coat
        of seal" [syn: sealskin]
     4: a stamp affixed to a document (as to attest to its
        authenticity or to seal it); "the warrant bore the
        sheriff's seal"
     5: an indication of approved or superior status [syn: cachet,
         seal of approval]
     6: a finishing coat applied to exclude moisture
     7: fastener that provides a tight and perfect closure
     8: any of numerous marine mammals that come on shore to breed;
        chiefly of cold regions
     v 1: close with or as if with a seal; "She sealed the letter with
          hot wax" [ant: unseal]
     2: make tight; secure against leakage; "seal the windows" [syn:
         seal off]
     3: decide irrevocably; "sealing dooms"
     4: affix a seal to
     5: cover with varnish [syn: varnish]
     6: hunt seals