yaksha (yakṣa) A type of demon, one of the eight kinds of nonhuman beings who protect Buddhism.
Yashodhara (Yaśodharā) Wife of Shakyamuni and mother of Rahula. After Shakyamuni renounced secular life and gained enlightenment, he converted her to his teachings and she became a nun. The thirteenth chapter of the Lotus Sutra predicts that she will become a buddha named Endowed with a Thousand Ten Thousand Glowing Marks.
yojana A unit of measurement in ancient India, equal to the distance that the royal army could march in a day.