Kennedy, Jack ‧ ie /ˈdʒæki/ BrE AmE ( also Jackie Kennedy Onassis )
(1929–94) the wife of John F. Kennedy, who became very popular when she was the ↑ first lady of the US from 1961 to 1963 because she was considered very beautiful and fashionable. In 1968, five years after Kennedy's death, she married Aristotle ↑ Onassis .