(formerly) the ruler and chief monk of Tibet, believed to be a reincarnation of Avalokitesvara and sought for among newborn children after the death of the preceding Dalai Lama.
Da·lai La·ma (dä'lī lä'mə) n. The traditional governmental ruler and highest priest of the dominant sect of Buddhism in Tibet and Mongolia, understood by Tibetans to be the living incarnation of the bodhisattva of compassion.
[Tibetan : Mongolian dalai, ocean + Tibetan bla-ma, monk (so called because he is known as the ocean of compassion); see lama.]