monopoly

(noun) (economics) a market in which there are many buyers but only one seller. Examples: "A monopoly on silver." "When you have a monopoly you can ask any price you like."

(noun) exclusive control or possession of something. Example: "They have no monopoly on intelligence."

(noun) a board game in which players try to gain a monopoly on real estate as pieces advance around the board according to the throw of a die. Synonyms: Monopoly.