Expressing exasperation or impatience with a situation.

(US, sports) An athletic contest played in the opposing team's geographic area.

(idiomatic, sports) An athletic contest played in a team's own geographic area.

(idiomatic, sports) An athletic contest played away from the teams home field.

(idiomatic) A person who now works against the same people they once supported.

(game theory) Formally, a structure (P, mathbf S, mathbf F) where P = {1,2, ...,m} is a set of players, mathbf S=(S_1,S_2,…,S_m) is an m-tuple of pure strategy sets, one for each player, and mathbf F=(F_1,F_2,…,F_m) is an m-tuple of payoff functions.

(game theory) Informally, a game formalized using a function (called the characteristic function) that assigns to each coalition of players a real number representing the payoff that the coalition can gain if it is formed, without specifying how the outcome is divided among the participants of the coalition; upon the execution of the game, each player can be a member of at most one coalition.

(game theory) Informally, a representation of a game as a tree of decision nodes, with the game beginning at a unique initial node, and flowing through the tree along a path determined by the players until a terminal node is reached, where play ends and payoffs are assigned to all players; each non-terminal node belongs to a player; that player chooses among the possible moves at that node, each possible move is an edge leading from that node to another node.

An organization devoted to bringing game players together.

A game in which the players' decision-making skills have a high significance in determining the outcome, such as chess, checkers or go.