足そく温おん器きそくおんきMeanings1nounfootwarmerA device for warming the feet, typically electric or filled with hot water.寒さむい冬ふゆの日ひには、足そく温おん器きを使つかうと足あしがぽかぽかになる。On cold winter days, using a footwarmer makes your feet toasty warm.