sealant

प्वालदार सतहमा कडा तह बनाउने बन्दकारी पदार्थ, जस्तै सतह तयार गर्ने रङ वा वार्निस

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)