n.
1. fastener consisting of a resinous composition that is plastic when warm; used for sealing documents
2. a device incised to make an impression; used to secure a closing or to authenticate documents
3. the pelt or fur (especially the underfur) of a seal
4. a member of a Naval Special Warfare unit who is trained for unconventional warfare
5. a stamp affixed to a document (as to attest to its authenticity or to seal it)
6. an indication of approved or superior status
7. a finishing coat applied to exclude moisture
8. fastener that provides a tight and perfect closure
9. 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
2. make tight; secure against leakage
3. decide irrevocably
4. affix a seal to
5. cover with varnish
6. hunt seals
