sealer

noun

1. A tool used to seal something.
2. A person who is employed to seal things.
3. A person who is employed to seal things.
4. A coating designed to prevent excessive absorption of finish coats into porous surfaces; a coating designed to prevent bleeding.
5. (colloquial)A goal, shot, point, etc., scored close to fulltime so that it becomes impossible for the losing side to score enough to win.
6. A person who hunts seals.

   “"We must club the seals," I announced, when convinced of my poor marksmanship. "I have heard the sealers talk about clubbing them."”

7. A vessel engaged in the business of capturing seals.