What is the term for the loose or slack part of a rope between two ends?

The term for the loose or slack part of a rope between two ends is known as a bight. A bight is created when a length of rope is doubled back on itself, leaving a segment that is not under tension. This definition emphasizes the bight's role in various applications, such as knots, where the slack section allows for manipulation and tying.

In contrast to this, a loop refers to a closed curve formed in the rope, often used to create secure ties or hitches. The tail is the end part of a rope that is typically free and not in use, while the end simply designates the terminal point of the rope. Understanding the specific terminology is crucial for safe and effective practices with ropes in lineman work, where correct use of terms can prevent misunderstandings during communications or while performing tasks.