Definitions of prey:

• noun:   animal hunted or caught for food
• noun:   a person who is the aim of an attack (especially a victim of ridicule or exploitation) by some hostile person or influence

  Example: "He fell prey to muggers"

• verb:   profit from in an exploitatory manner
• verb:   prey on or hunt for
• name:  A surname (very rare: popularity rank in the U.S.: #45828)