Something affording pleasure, diversion, or amusement: the show was an entertaining spectacle.
An agreeable occupation for the mind: solving crossword puzzles is a popular entertainment.
An amusing or diverting act or thing: The highlight of the ball was a performance.
A person who entertains: The socialite is always entertaining guests with her social activities and witty remarks.
A man who amuses spectators at a show: The actor is accustomed to entertaining audiences.
Entertainment often hits on the themes that the brain was evolved to deeply react to, in order to understand the world around us. This is why entertainment is so popular and is able to endure over time. Entertaiment also has a tendency to transcend different media, giving rise to familiar images, structures and themes that have demonstrated an seemingly unlimited potential for creative remix.