The term 'Part of a Freight Train' can be broken down into four crossword solutions: Flatcar (7 letters), BOXCAR (6 letters), Bcar (4 letters), and Fcar (4 letters). A flatcar is a type of railroad car that is used to transport large, heavy items such as construction equipment or vehicles. A BOXCAR is a type of freight car that is used to transport goods in boxes, crates, and other containers. Bcar and Fcar are abbreviations for the words 'bulk car' and 'freight car, ' respectively. Bulk cars are used to transport large amounts of loose materials, such as grain, coal, and ore, while freight cars are used to transport goods and materials of all kinds. All four of these types of cars are essential components of a freight train.