1a port and city on the Black Sea in the Ukraine, popular with tourists
2, the Yalta Conferencea meeting held at Yalta in 1945 between Churchill, Roosevelt, and Stalin, which greatly influenced the history of Europe after World War II. The three leaders discussed how to finish the war against Hitler's Germany, and how central and eastern Europe should be divided after the war. They also agreed to set up the United Nations.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.