Armadillidium

noun

Ar·​ma·​dil·​lid·​i·​um ˌär-mə-də-ˈli-dē-əm 

: a genus of wood lice (family Armadillidiidae) capable of curling into a ball when disturbed and including one (A. vulgare) from Europe that has been introduced worldwide

Word History

First Known Use

1837, in the meaning defined above

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