乳にゅう棒ぼう

noun

pestle

A tool used with a mortar (乳鉢) for grinding or mixing substances, commonly in pharmacy, chemistry, or cooking.

• 薬やく剤ざい師しは乳にゅう棒ぼうと乳にゅう鉢ばちで薬くすりをすりつぶした。

  The pharmacist ground the medicine with a pestle and mortar.