Definitions
1.nounA process (a running program) that does not have a controlling terminal.
2.nounAn evil supernatural spirit.
3.nounA neutral supernatural spirit.
4.nounSomeone with great strength, passion or skill for a particular activity, pursuit etc.; an enthusiast."He’s a demon at the card tables."
5.nounA form of patience (known as Canfield in the US).
6.nounAny of various hesperiid butterflies of the genera Notocrypta and Udaspes.