turnip shell

English

Noun

turnip shell (plural turnip shells)

1. The shell of any several large, thick, spiral sea snails belonging to genus Rapa and pthers, roughly turnip-shaped.
   1. Rapana rapiformis (syn. Rapana bulbosa).

References

• Rapana rapiformis on Wikipedia.Wikipedia
• “turnip-shell”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.