(1889-1945) the leader of the Nazi Party in Germany from 1921. He was born in Austria and was the 'Führer' (= leader) of Germany from the mid-1930s until his death. He allowed no opposition, and attempted to establish a pure race of German people through a policy of ANTI-SEMITISM, as a result of which millions of Jewish people were killed in CONCENTRATION CAMP s . He started World War II by ordering his armies to enter Poland in 1939, and killed himself in 1945, just before Germany lost the war. His name is now sometimes used to describe someone who uses their authority in a cruel or unfair way, or someone who wants to control everything.