Plumb is a type of fruit that is typically small, round, and sweet, belonging to the genus Prunus. It comes in various colors, including purple, yellow, and green, and is often enjoyed fresh, dried, or in jams and desserts. Plums are rich in vitamins and antioxidants, making them a healthy snack option. In addition to its culinary uses, "plumb" can also refer to a tool used in construction and carpentry. A plumb bob is a weight suspended from a string, used to find a vertical reference line. This tool helps ensure that structures are built straight and level.