ser·​pu·​la | \ ˈsərpyələ\

Definition of serpula

1 capitalized : a genus (the type of the family Serpulidae) of small marine polychaete worms having brightly colored gills and constructing and living in contorted calcareous tubes that may be closed with horny opercula
2 plural serpulas\ -​ləz\ or serpulae\ -​ˌlē , -​ˌlī\ : any worm of the genus Serpula or family Serpulidae

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History and Etymology for serpula

New Latin, from Latin, little snake, from serpere to creep

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to shake or wave menacingly

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