Definitions

1. noun

A person, especially in the 17th and 18th centuries, who sold butter on the street, often by shouting out their wares.

“The streets were filled with vendors, including a buttermonger, hawking their goods to passersby.”

2. verb

To sell or deal in butter, especially as a street vendor.

“The old town was famous for its buttermongers who sold butter and cheese on the market stalls.”