Pain of mind arising from misfortune, significant personal loss, misconduct of oneself or others, etc.; sorrow; sadness. [from early 14th c.]
(countable) Cause or instance of sorrow or pain; that which afflicts or distresses; trial.
Verb
(online gaming) To deliberatelyharass and annoy or cause grief to other players of a game in order to interfere with their enjoyment of it; especially, to do this as one’s primary activity in the game. [from late 20th Century]