Definition of "Seal" :

noun: any of numerous marine mammals that come on shore to breed; chiefly of cold regions

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

noun: fastener that provides a tight and perfect closure

noun: a finishing coat applied to exclude moisture

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

noun: an indication of approved or superior status

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

"The warrant bore the sheriff's seal."

noun: a member of a Naval Special Warfare unit who is trained for unconventional warfare

"SEAL is an acronym for Sea Air and Land."

noun: the pelt or fur (especially the underfur) of a seal

"A coat of seal."

verb: decide irrevocably

"Sealing dooms."

verb: hunt seals

verb: cover with varnish

verb: close with or as if with a seal

"She sealed the letter with hot wax."

verb: make tight; secure against leakage

"Seal the windows."

verb: affix a seal to

"Seal the letter."