poach

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To cook in a boiling or simmering liquid: Poach the fish in wine.
2. v. To trespass on another's property in order to take fish or game.
3. v. To take fish or game in a forbidden area.
4. v. To become muddy or broken up from being trampled. Used of land.
5. v. To sink into soft earth when walking.
6. v. To take or appropriate something unfairly or illegally.
7. v. Sports To play a ball out of turn or in another's territory, as in doubles tennis.
8. v. To trespass on (another's property) for fishing or hunting.
9. v. To take (fish or game) illegally.
10. v. To make (land) muddy or broken up by trampling.
11. v. To take or appropriate unfairly or illegally.
12. v. Sports To play (a ball) out of turn or in another's territory.

Century Dictionary and Cyclopedia

1. To poke; thrust; push; put.
2. To stab; pierce; spear: as, to poach fish.
3. To tread; break up or render slushy by frequent treading; mark with footprints.
4. To make a thrust in or as in sword-play.
5. To be penetrable, as soft muddy or marshy ground; be damp and swampy.
6. To intrude or encroach upon another's preserves for the purpose of stealing game; kill and carry off game in violation of law.
7. To trespass upon, especially for the purpose of killing and stealing game.
8. To cook by breaking the shell and dropping the contents whole into boiling water: said of eggs.
9. To gain an unfair advantage at the start of a race.

Wiktionary

1. v. transitive, intransitive to take game or fish illegally while trespassing on someone's property
2. v. transitive, intransitive to take anything illegally or unfairly
3. v. transitive, intransitive to cause an employee or customer to switch from a competing company to your own company
4. v. transitive to cook something in simmering water
5. v. To become soft or muddy.
6. v. To make soft or muddy.

GNU Webster's 1913

1. v. To cook, as eggs, by breaking them into boiling water; also, to cook with butter after breaking in a vessel.
2. v. To rob of game; to pocket and convey away by stealth, as game; hence, to plunder.
3. v. To steal or pocket game, or to carry it away privately, as in a bag; to kill or destroy game contrary to law, especially by night; to hunt or fish unlawfully.
4. v. obsolete To stab; to pierce; to spear, as fish.
5. v. obsolete To force, drive, or plunge into anything.
6. v. To make soft or muddy by trampling.
7. v. obsolete To begin and not complete.
8. v. To become soft or muddy.

WordNet 3.0

1. v. hunt illegally
2. v. cook in a simmering liquid