Last Updated：2025/11/21
The centre part of a ship’s biscuit. This part was compressed and even harder than the rest of the biscuit.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
reefer's nut
Edit Histories（0）
Source Word
reefer's nut
（ canonical ）
（ plural ）
