IPA: /ˈkʌvərər/
KK: /ˈkʌvərər/
A person or thing that covers something, such as a protective layer or a lid.
The coverer placed a blanket over the furniture to protect it from dust.
Coverer → It is formed from "cover" (from Old French *couvrir*, meaning to envelop or conceal) and "-er" (meaning a person who). A coverer is a person who covers or conceals something.
Think of someone who 'envelops' or 'conceals' something — that's what a coverer does.