A "tulku" is a term in Tibetan Buddhism that refers to a person who is recognized as the reincarnation of a previous spiritual teacher or lama. Tulkus are believed to possess the same spiritual qualities and wisdom as their predecessors, allowing them to continue their teachings and guide followers in their spiritual practices. The process of identifying a tulku often involves specific signs, dreams, or tests that indicate the person's previous life. Notable examples of tulkus include the Dalai Lama and the Karmapa, both of whom play significant roles in Tibetan Buddhism and its teachings.