Reference for Niddah 115:34

כשיר מהו כשורה מהו טיפין טיפין מהו לרוחב ירכה מהו

— The school of R. Jannai replied: As far as the place of hebek.<span class="x" onmousemove="('comment',' The sinews that connect the thigh and the leg. The part of the leg beneath this junction and the part of the thigh above it are regarded as the INNER SIDE (cf. Rashi and Tosaf. Asheri). Aliter: The place where the leg meets the thigh when the woman squats (Aruk); the part of the leg to the place where the (ankle) loop sits (Jast.). ');">³⁰</span>

Jastrow

Jastrow