also: へんち
noun
callus; callosity
Medical term for a thickened, hardened area of skin, typically on hands or feet, caused by repeated friction or pressure.
ギターを長時間弾いたら、指先に胼胝ができた。
After playing guitar for a long time, I got a callus on my fingertip.
足の裏の胼胝が痛む。
The callus on the sole of my foot hurts.
From Chinese 胼胝 (piánzhī), meaning callus. The Japanese readings べんち and へんち are derived from the Chinese sounds.