natal cleft

Noun

(anatomy) The groove between the buttocks that runs from just below the sacrum to the perineum.

Japanese Meaning

解剖学用語：仙骨の直下から会陰にかけて、臀部の間に位置する溝

The surgeon explained that the patient’s infection was located in the natal cleft and required careful cleaning.

外科医は、患者の感染が臀裂（お尻の溝）にあり、注意深い洗浄が必要だと説明しました。

Sense（1）

(anatomy) The groove between the buttocks that runs from just below the sacrum to the perineum.

natal clefts

（ plural ）