noun, noun which may take the genitive case particle 'no'
perineum
Anatomical term for the region between the anus and the external genitalia.
会陰部の痛みが続く場合は、医師に相談してください。
If you have persistent pain in the perineal area, please consult a doctor.
The kanji 会 (meeting/joining) and 陰 (shade/yin) combine to refer to the perineum, a junction point in the body. The exact historical derivation is uncertain.