Definition of genocides:
(n) :
The systematic and deliberate destruction of a group of people; typically by killing substantial numbers of them, on the basis of their ethnicity, religion, or nationality.
(n) :
(by extension) The systematic killing of substantial numbers of people on other grounds.
(v) :
(transitive) To commit genocide (against); to eliminate (a group of people) completely.
(n) :
(by extension) The systematic suppression of ideas or practices on the basis of cultural or ethnic origin; culturicide.
(n) :
(video games, roguelikes) The elimination of an entire class of monsters by the player.