Felony - A crime carrying a penalty of more than a year in prison. 

A felony is traditionally considered a crime of high seriousness, whereas a misdemeanor is regarded as less serious. The term "felony" originated from English common law (From the French medieval word "félonie") to describe an offense that resulted in the confiscation of a convicted person's land and goods, to which additional punishments including capital punishment could be added; other crimes were called misdemeanors. Following conviction of a felony in a court of law, a person may be described as a felon or a convicted felon.