底そこ豆まめ

noun

blister on the sole; corn

Refers to a blister or corn that forms on the bottom of the foot, often from friction or pressure.

• 新あたらしい靴くつで長ながく歩あるいたら、底そこ豆まめができてしまった。

  After walking a long way in new shoes, I got a blister on the sole of my foot.