Definition - What does Sex Offender mean?
A sex offender is a person who has committed a sex crime. Examples of crimes that could give someone the label of "sex offender" include rape, molestation and certain forms of sexual harassment.
If a person is a convicted sex offender, then there is a good chance that they will have to register with the local police office.
Justipedia explains Sex Offender
Sex offenses are very serious. Rape can be accompanied by jail sentences that are commonly between 5–10 years. Furthermore, once a sex offender gets out of prison, the label of being a "sex offender" can make it much more difficult to get a job or housing.
There are varying degrees of severity for sex offenses. For example, sexual harassment is generally less severe than molestation or rape. The more severe the sex offense, the more severe the punishment is likely to be.