When the legs of a loop are brought together and crossed the rope has taken a turn.

The benefit of round turns is best understood from the capstan equation.

The second course of wrappings in some seizing knots can be referred to as riding turns.

The formation of an unintentional riding turn on a sailing winch can cause it to jam.

This hitch is actually a turn tied around an object where the end is secured by its own standing part.