(1913-94) a US politician in the Republican Party who was President of the US from 1969 to 1974. He helped to end the Vietnam War and improved the US's political relationship with China. He is most famous for being involved in Watergate and for officially leaving his position as President before Congress could impeach him (=charge him with a serious crime). Many people thought he was dishonest, and because of this he was sometimes called 'Tricky Dicky'.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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