watergate (n.)

mid-14c., "channel for water;" late 14c., "flood-gate;" from water (n.1) + gate (n.). The name of a building in Washington, D.C., that housed the headquarters of the Democratic Party in the 1972 presidential election, it was burglarized June 17, 1972, which led to the resignation of President Nixon.

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Definitions of watergate from WordNet

Watergate (n.)
a political scandal involving abuse of power and bribery and obstruction of justice; led to the resignation of Richard Nixon in 1974;
Synonyms: Watergate scandal