plural noun
Pu·pil·li·dae | \ pyüˈpiləˌdē \

Definition of Pupillidae 

: a large family of usually small pulmonate land snails having a long spiral often somewhat cylindrical shell generally with a narrowed and more or less toothed aperture — compare pupa shell

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History and Etymology for Pupillidae

New Latin, from Pupilla, type genus (from diminutive of pupa) + -idae

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to deposit or conceal in a hiding place

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