calluses from sitting seiza
Refers to calluses that develop on the ankles, insteps, or tops of the feet from prolonged sitting in the seiza (正座) position. Often used in everyday conversation about the physical effects of traditional Japanese sitting.
See also: 正座 (せいざ)
正座をよくするので、足の甲に座りだこができてしまった。
Because I often sit seiza, I've developed calluses on the tops of my feet.
座りだこが痛くて、正座がつらい。
My calluses from sitting seiza hurt, so sitting seiza is painful.
たこ is the general term for callus or corn, while 座りだこ specifically refers to calluses from sitting seiza.
Common mixed kanji-kana spelling.
Full kanji spelling using 胼胝 (callus), but rare and may be difficult to read.
Compound of 座り (sitting) + たこ (callus). The reading だこ is a rendaku (sequential voicing) form of たこ.