(Buddhism) the Three Mysteries in Esoteric Buddhism, secrets of the body, speech, and mind of the Buddha

(Internet slang) a “sickness” in teenagers characterized by sophomoric, edgy, and/or pretentious behavior (trying too hard to be special in unusual ways)

(archaic) a noblewoman who is younger sister to another one in her family

to become white; to turn white / (of the sky) to become bright