蛇じゃ腹ばら糸いと

noun

tightly twisted thread

A thread with a strong, tight twist, often used in sewing or crafts where durability or a textured effect is desired.

• 蛇じゃ腹ばら糸いとは、縫ぬい目めが丈じょう夫ぶになるので、革かわ製せい品ひんの縫ほう製せいによく使つかわれる。

  Tightly twisted thread is often used for sewing leather goods because it makes the seams strong.