The term 'Chesapeake Bay Catch' refers to the crabs that are harvested from the Chesapeake Bay, which is a large estuary in the Mid-Atlantic region of the United States. The four letter solution for this term is 'CRAB', which is a type of crustacean that is found in the bay. Crabs are a popular seafood item and are often served steamed or boiled. They are also used in many recipes, such as CRAB cakes and CRAB bisque.