IPA: /ˈsteɪnər/
KK: /ˈsteɪnər/
An object or substance that causes a mark or discoloration on a surface.
The painter used a stainer to enhance the color of the wood.
Stainer → It is formed from "stain" (from Old French *esteindre*, meaning to extinguish or to color) and "-er" (meaning a person who). A stainer is a person who applies color or a stain to something.
Think of someone who 'colors' or 'applies a stain' — that's what a stainer does.