also: さっこう
noun
ligature mark; constriction mark; strangulation groove
Medical term for a groove or mark left on the skin by a tight ligature, such as in strangulation or prolonged binding.
法医学の教科書には、索溝の写真が載っている。
Photographs of ligature marks appear in forensic medicine textbooks.
首に索溝が認められた。
A ligature mark was observed on the neck.
Compound of 索 (saku, 'cord' or 'rope') and 溝 (kō, 'groove' or 'furrow'). The reading さっこう is a euphonic change from さくこう.