'Sealer' definitions:

Definition of 'sealer'

From: WordNet
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) [syn: sealant, sealer]
noun
An official who affixes a seal to a document

Definition of 'Sealer'

From: GCIDE
  • Sealer \Sealer\, n. A mariner or a vessel engaged in the business of capturing seals. [1913 Webster]

Definition of 'Sealer'

From: GCIDE
  • Sealer \Seal"er\, n. One who seals; especially, an officer whose duty it is to seal writs or instruments, to stamp weights and measures, or the like. [1913 Webster]