The art or practice of using tactical maneuvers to further one's aims or better one's position: "a sometimes wry, sometimes savage look at the players, political gamesmanship, turf battles and outright chaos that permeated Washington” ( David M. Alpern).
The use in a sport or game of aggressive, often dubious tactics, such as psychological intimidation or disruption of concentration, to gain an advantage over one's opponent.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.