* The office chair swiveled around to face the window.
* The spy used a swivel to listen in on the conversation.
* She swiveled her head to look at the commotion.
* The swivel on the gun allowed the soldier to fire in multiple directions.
* The swivel seat on the airplane made it easy to see the scenery.
These are just a few examples, and the word "swivel" can be used in many different ways. The context will determine its specific meaning.