The word deli is a shortened form, or common nickname, of delicatessen, an American English version of the German delikatessen, the plural of delikatesse, "delicacy," or "fine food." Many delis specialize in the food of a certain region, country, or ethnicity — like a Jewish deli, a German deli, or a Greek deli.

A delicatessen, or in short, a “deli,” is a store where people can go to buy ready-to-eat items such as cold cut meats, sliced cheeses, sandwiches, breads, salads and so much more. If you're from the Mid-Atlantic or New England areas, you probably have a favorite deli — or a list of at least a few favorites!

The word "deli" comes from the German word "delikatessen": The word "deli" is derived from the German word "delikatessen," which means "delicious things to eat." Delis in the United States are known for their delicious sandwiches, soups, and other lunchtime favorites.

In the US, a deli is a store selling cold cuts, cheeses, and a variety of salads, as well as a selection of unusual or foreign prepared foods. I imagine, if you are looking at a menu, and something is served deli style in the US, it probably means that it is the kind of sandwich you'd find in a deli.