Victim

1. A living creature killed and offered as a sacrifice to some deity or supernatural power.

2. A person who is put to death or subjected to torture by another; one who suffers severely in body or property through cruel or oppressive treatment.

One who is reduced or destined to suffer under some oppressive or destructive agency.

One who perishes or suffers in health, etc from some enterprise or pursuit voluntarily undertaken.

In weaker sense: one who suffers some injury, hardship, or loss, is badly treated or taken advantage of, or the like.

Victimise

1. To make a victim of; to cause to suffer discomfort, inconvenience, etc; to cheat, swindle, or defraud.

2. To put to death as, or in the manner of, a sacrificial victim; to slaughter

(Ref: The Shorter Oxford English Dictionary, Vol 2)