Synonyms for seal

fastener consisting of a resinous composition that is plastic when warm (noun)

a device incised to make an impression (noun)

• stamp

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

• sealskin

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

an indication of approved or superior status (noun)

• cachet

make tight (verb)

cover with varnish (verb)

• varnish