The term 'Wild Plum' can be broken down into two crossword solutions: SLOE (4 letters) and ISLAY (5 letters). SLOE is a type of wild plum that is native to Europe, North Africa, and parts of Asia. It is a small, tart fruit that is often used to make jams, jellies, and liqueurs. ISLAY is an island off the west coast of Scotland that is known for its production of whisky. The island is also home to a variety of wild plums, which are used to make jams and other preserves.