farmer
n.— «In game parlance, the term “farmer” is used to mean anyone who goes out and repeatedly kills the same creatures in the same spot in the game so they can potentially loot a valuable, random item that drops and sell it for a lot of in-game money.» —“The “Chinese Farmer” Phenomenon” by Kaye Vivian Dove Lane Nov. 29, 2005. (source: Double-Tongued Dictionary)