Available Definitions:
1) a. - Guilty of crime or sin.
2) a. - Involving a crime; of the nature of a crime; -- said of an act or of conduct; as, criminal carelessness.
3) a. - Relating to crime; -- opposed to civil; as, the criminal code.
4) n. - One who has commited a crime; especially, one who is found guilty by verdict, confession, or proof; a malefactor; a felon.