IPA: /ˈɔɪstərər/
KK: /ˈɔɪstərər/
A person who sells or collects oysters.
The oysterer brought fresh oysters to the market every morning.
Oysterer → The word is formed from "oyster" (from Old French *oistre*, meaning a type of shellfish) and "-er" (meaning a person who). An oysterer is a person who deals with or sells oysters.
Think of someone who works with oysters — the '-er' indicates a person, and 'oyster' refers to the shellfish.