The term 'heavy cart' can be summarized as a vehicle used to transport heavy loads. The word 'DRAY' is a four-letter term that refers to a type of cart, usually pulled by horses or oxen, that is used for transporting goods. It is typically used for carrying large and heavy items such as barrels, crates, and other goods. Drays are often used in farming and agriculture, as well as in the transportation of goods from one place to another.