spindle shell

noun

Definition of spindle shell

  1. 1 less commonly spindle stromb :  any gastropod mollusk of the genus Tibia (family Strombidae) having a shell with a long conical many-whorled spire and a long slender anterior canal

  2. 2 :  a band shell of the genus Fusinus having a shell with a many-whorled spire and a very long straight canal

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