A more thorough explanation:

Definition: Ferlingum is another word for furlong.

Example: The race track is one mile long and has eight ferlingums.

Explanation: A furlong is a unit of measurement used in horse racing and is equal to one-eighth of a mile. In the example given, the race track is one mile long and has eight furlongs or ferlingums. This means that the race track is divided into eight equal parts, each measuring one-eighth of a mile.