monopoly (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.
monopoly (Noun) — (economics) a market in which there are many buyers but only one seller. ex. "a monopoly on silver" ex. "when you have a monopoly you can ask any price you like"
monopoly (Noun) — Exclusive control or possession of something. ex. "They have no monopoly on intelligence"