prey

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. An animal hunted or caught for food; quarry.
2. n. One that is defenseless, especially in the face of attack; a victim.
3. n. The act or practice of preying.
4. v. To hunt, catch, or eat as prey: Owls prey on mice.
5. v. To victimize or make a profit at someone else's expense.
6. v. To plunder or pillage.
7. v. To exert a baneful or injurious effect: Remorse preyed on his mind.

Century Dictionary and Cyclopedia

1. An obsolete form of pray.
2. n. Goods taken by robbery or pillage; spoil; booty; plunder.
3. n. That which is seized by any carnivorous animal to be devoured; quarry, as of a raptorial bird.
4. n. Hence That which is given into the power of another or others; a victim.
5. n. The act of preying or seizing upon anything. Plundering; pillage; robbery; depredation.
6. n. The act of seizing in order to devour; seizure, as by a carnivorous animal of its victim.
7. n. Synonyms Booty, etc. (see pillage).
8. n. Ravin.
9. To take booty; commit robbery or pillage; seize spoils: generally with on or upon.
10. To seize and devour an animal as prey: generally followed by on or upon.
11. To exert wasting or destroying power or influence ; bring injury, decay, or destruction: generally followed by on or upon.
12. To ravage; pillage; make prey of.

Wiktionary

1. n. Anything, as goods, etc, taken or got by violence; anything taken by force from an enemy in war; spoil; booty; plunder.
2. n. That which is or may be seized by animals or birds to be devoured; hence, a person given up as a victim.
3. n. A living thing that is eaten by another living thing.
4. v. To victimize, hunt, attack or plunder.
5. v. To devour.
6. v. To exert harmful influence.

GNU Webster's 1913

1. n. Anything, as goods, etc., taken or got by violence; anything taken by force from an enemy in war; spoil; booty; plunder.
2. n. That which is or may be seized by animals or birds to be devoured; hence, a person given up as a victim.
3. n. The act of devouring other creatures; ravage.
4. v. To take booty; to gather spoil; to ravage; to take food by violence.

WordNet 3.0

1. n. animal hunted or caught for food
2. n. a person who is the aim of an attack (especially a victim of ridicule or exploitation) by some hostile person or influence
3. v. profit from in an exploitatory manner
4. v. prey on or hunt for