Definitions of passion:

noun: strong feeling or emotion
noun: a feeling of strong sexual desire
noun: the suffering of Jesus at the crucifixion
noun: any object of warm affection or devotion
Example: "The theater was her first love or he has a passion for cock fighting"
noun: an irrational but irresistible motive for a belief or action
noun: something that is desired intensely
noun: intense passion or emotion