Demon | Mean of demon in English Dictionary

/ˈdiːmən/

• Noun
• an evil spirit
1. angels and demons [=devils]
• a person who has a lot of energy or enthusiasm
1. She is a demon for work. = She works like a demon. [=she works very hard]
• something that causes a person to have a lot of trouble or unhappiness
1. She spent her whole life battling the demons of drug and alcohol addiction.
2. He finally was able to face the demons from his unhappy childhood.
3. his inner demons