Seal (device) definition

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

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

(3) Fastener that provides a tight and perfect closure

(4) A finishing coat applied to exclude moisture

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

(6) An indication of approved or superior status

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

"The warrant bore the sheriff's seal"

(8) A member of a Naval Special Warfare unit who is trained for unconventional warfare

"SEAL is an acronym for Sea Air and Land"

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

"A coat of seal"

(10) Decide irrevocably

"Sealing dooms"

(11) Hunt seals

(12) Cover with varnish

(13) Close with or as if with a seal

"She sealed the letter with hot wax"

(14) Make tight; secure against leakage

"Seal the windows"

(15) Affix a seal to

"Seal the letter"