屑くず繭まゆ

noun

waste cocoon; bad cocoon; damaged cocoon

Technical term in sericulture for a cocoon that is unusable for reeling silk due to damage, irregular shape, or contamination.

• 屑くず繭まゆは絹きぬ糸いとの生せい産さんには使つかえない。

  Waste cocoons cannot be used for silk thread production.