de ‧ mon /ˈdiːmən/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Language: Late Latin ; Origin: daemon 'evil spirit' , from Greek daimon ]
1 . an evil ↑ spirit or force:
He was speeding down the motorway as if pursued by a demon.
2 . [usually plural] something that makes you anxious and causes you problems:
She struggled with her husband’s demons of addiction and alcoholism.
3 . someone who is very good at something – often used humorously:
a demon cook
4 . the demon drink British English alcoholic drink – often used humorously
⇨ ↑ daemon