The term 'TURN AS ON A PIVOT' can be summarized as the word 'SWIVEL', which is a 6-letter word. SWIVEL is an action that involves turning or rotating around a fixed point, such as a pivot or axle. It is commonly used in engineering and mechanics to describe the movement of objects, such as chairs, wheels, and other objects. Swiveling is also used in everyday life, such as when someone turns their head to look at something.