prime minister      
noun [ C usually singular ] uk/ˌpraɪm ˈmɪn.ɪ.stər/ us/ˌpraɪm ˈmɪn.ɪ.stɚ/ (UK informal abbreviation PM)
B2 首相;总理
the leader of the government in some countries
 - More examples
 - The prime minister's speech produced an angry response from the opposition.
 - Margaret Thatcher became Britain's first woman prime minister in 1979.