poach

Short definition from Wiktionary

Verb

1. 1
   To cook (something) in simmering or very hot liquid (usually water; sometimes wine, broth, or otherwise).
2. 2
   To be cooked in such manner.
3. 3
   To trespass on another's property to take fish or game.
4. 4
   To take game or fish illegally.
5. 5
   To take anything illegally or unfairly.
6. 6
   To intrude; to interfere; to get involved inappropriately, without welcome.
7. 7
   To entice (an employee or customer) to switch from a competing company to one's own.
8. 8
   To make soft or muddy by trampling.
9. 9
   To become soft or muddy by being trampled on.
10. 10
    To stab; to pierce; to spear or drive or plunge into something.

Noun

1. 1
   The act of cooking in simmering liquid.
2. 2
   The act of taking something unfairly, as in tennis doubles where one player returns a shot that their partner was better placed to return.