Definition of "Hoover" :

noun: a kind of vacuum cleaner

noun: 31st President of the United States; in 1929 the stock market crashed and the economy collapsed and Hoover was defeated for reelection by Franklin Roosevelt (1874-1964)

noun: United States lawyer who was director of the FBI for 48 years (1895-1972)

noun: United States industrialist who manufactured vacuum cleaners (1849-1932)

verb: clean with a vacuum cleaner