"seal" in the noun sense
1. sealing wax, seal
fastener consisting of a resinous composition that is plastic when warm used for sealing documents and parcels and letters
2. seal, stamp
a device incised to make an impression used to secure a closing or to authenticate documents
3. seal, sealskin
the pelt or fur (especially the underfur) of a seal
"a coat of seal"
4. Navy SEAL, SEAL
a member of a Naval Special Warfare unit who is trained for unconventional warfare
"SEAL is an acronym for Sea Air and Land"
a stamp affixed to a document (as to attest to its authenticity or to seal it
"the warrant bore the sheriff's seal"
6. cachet, seal, seal of approval
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
"seal" in the verb sense
1. seal, seal off
make tight secure against leakage
"seal the windows"
close with or as if with a seal
"She sealed the letter with hot wax"
affix a seal to
"seal the letter"
5. varnish, seal
cover with varnish
Source: WordNet® (An amazing lexical database of English)
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