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.
屑繭は絹糸の生産には使えない。
Waste cocoons cannot be used for silk thread production.
Compound of 屑 (kuzu, 'waste, scrap') and 繭 (mayu, 'cocoon').