Original: A tulku ( , also tülku , trulku ) is an enlightened Tibetan Buddhist lama who has , through phowa and siddhi , consciously determined to take birth , often many times , in order to continue his or her Bodhisattva vow .
Simplified: A tulku ( also tülku , trulku ) is a Tibetan Buddhist lama who has achieved the ability to consciously determine to be reborn , often many times , in order to continue their Bodhisattva vow .