Definition of sealers:
(n) :
A tool used to seal something.
(n) :
A person who is employed to seal things.
(n) :
An officer responsible for sealing writs or instruments, stamping weights and measures, etc.
(n) :
A person who hunts seals.
(n) :
A vessel engaged in the business of capturing seals.
(n) :
A coating designed to prevent excessive absorption of finish coats into porous surfaces; a coating designed to prevent bleeding.