Other forms: grocers
Someone who sells food in a supermarket or convenience store is a grocer. If you can't find your favorite kind of cereal on the shelf, you should ask the grocer to help you.
The owner or manager of a grocery store is a grocer. This word once meant "one who buys and sells in gross," or in large quantities, from the Anglo-French grosser. By the 16th century, grocer also meant "merchant selling food," but earlier that person would've been called a spicer. Your neighborhood grocer might sell fresh produce from local farmers, unlike that big box supermarket out by the mall.