sealer

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. 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)
• Syn:
sealant
• Derivationally related forms:
seal, seal (for: sealant)
• Hypernyms:
sealing material
• Hyponyms:
caulk, caulking
2. an official who affixes a seal to a document
• Derivationally related forms:
seal
• Hypernyms:
official, functionary