Fiend | Mean of fiend in English Dictionary

/ˈfiːnd/

• Noun
• an evil spirit
• a very evil or cruel person
1. a murderous fiend
2. a fiend in human form
• a person who is very enthusiastic about something
1. He's a real golf fiend.
2. a fresh air fiend
3. He's a fiend for physical fitness. [=he is very devoted to physical fitness]

• a person who is addicted to a drug or to a kind of behavior
1. a dope/drug fiend [=addict]
2. a sex fiend