sealer

Meanings

1. 1
   noun

   a liquid or coating applied to make a surface resistant to air, water, stains, or damage

   The builder brushed a clear sealer over the porous stone.

2. 2
   noun

   a tool or machine that closes and seals packages, containers, or joints

   The operator fed each bag through the heat sealer.

3. 3
   noun

   a person or vessel engaged in hunting seals, especially historically

   The old sealer returned from the northern waters with a damaged mast.

An English agent noun from seal + -er. The coating, tool, and worker senses derive from the verb seal 'close securely'; the historical hunting sense derives separately from seal, the marine mammal.

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External links

• Google Images
• Cambridge Dictionary
• Wiktionary