SEAL

Fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters

A member of a naval special warfare unit who is trained for unconventional warfare

Example: "Seal is an acronym for sea air and land"

A device incised to make an impression; used to secure a closing or to authenticate documents

The pelt or fur (especially the underfur) of a seal

Example: "A coat of seal"

A stamp affixed to a document (as to attest to its authenticity or to seal it)

Example: "The warrant bore the sheriff's seal"

An indication of approved or superior status

A finishing coat applied to exclude moisture

Fastener that provides a tight and perfect closure

Any of numerous marine mammals that come on shore to breed; chiefly of cold regions