母ぼ貝がい

noun

pearl oyster; mother shellfish

Refers to a shellfish used as a mother for pearl cultivation, especially the pearl oyster.

• 真しん珠じゅ養よう殖しょくでは、母ぼ貝がいに核かくを挿そう入にゅうする。

  In pearl farming, a nucleus is inserted into the mother shellfish.