If a company, person, or state has a monopoly on something such as an industry, they have complete control over it, so that it is impossible for others to become involved in it.
双语例句
例： Russian moves to end a state monopoly on land ownership.
俄罗斯人对结束国家垄断土地所有权采取的措施。
例： the governing party's monopoly over the media.
执政党对媒体的垄断。