cock-a-leekie a Scottish soup/stew of chicken and leeks. The name came into use in the 18th century, but the dish itself is commonly said to date back to medieval times, when it contained onions and prunes (and/or raisins), and was probably served as two dishes—the chicken and the broth.
Modern recipes are generally for just one dish, not two; they provide for cutting up the chicken meat before the soup is served; and they are virtually unanimous in insisting that chicken and leeks between them provide plenty of solid matter.