ㄒㄩㄢˊxuánㄓㄨㄥˇzhǒng

  1. 形容時間漢書·○·》:威名折衝旋踵 郅支可悲!」

  2. 畏縮退後·張說兵士〉:烈烈忠勇 顧命旋踵。」

to turn on one's heel, in the twinkle of an eye, instantly