n. an inscrutable person who keeps his thoughts and intentions secret
n. (Greek mythology) a riddling winged monster with a woman's head and breast on a lion's body; daughter of Typhon
n. one of a number of large stone statues with the body of a lion and the head of a man that were built by the ancient Egyptians
n. 史芬克斯(希腊神话人物), 人面狮身像, 天蛾