| seal | (noun) any of numerous marine mammals that come on shore to breed; chiefly of cold regions | - |
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| (noun) a device incised to make an impression; used to secure a closing or to authenticate documents | Synonyms: stamp |
| (noun) fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters | Synonyms: sealing wax |
| (noun) fastener that provides a tight and perfect closure | - |
| (noun) a finishing coat applied to exclude moisture | - |
| (noun) an indication of approved or superior status | Synonyms: cachet, seal of approval |
| (noun) a stamp affixed to a document (as to attest to its authenticity or to seal it) | - |
| (noun) the pelt or fur (especially the underfur) of a seal | Synonyms: sealskin |
| sealant | (noun) a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface) | Synonyms: sealer |
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| sealer | (noun) an official who affixes a seal to a document | - |
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| (noun) a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface) | Synonyms: sealant |
| sealing | (noun) the act of treating something to make it repel water | Synonyms: waterproofing |
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| sealskin | (noun) a garment (as a jacket or coat or robe) made of sealskin | - |
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| (noun) the pelt or fur (especially the underfur) of a seal | Synonyms: seal |