IPA: /ˈvɑrnɪʃər/
KK: /ˈvɑrnɪʃər/
A person who applies a protective coating to surfaces, usually to enhance appearance and durability.
The varnisher carefully applied the finish to the wooden table.
Varnisher → It is formed from "varnish" (from Middle French *vernis*, meaning a glossy finish or coating) and "-er" (meaning a person who). A varnisher is a person who applies a glossy finish or coating to surfaces.
Think of a person who applies a 'glossy finish' ('varnish') to surfaces — that's what a varnisher does.