ar·​ca | \ ˈärkə\

Definition of arca

1 plural arcae\ -​ˌkī , -​ˌsē\ [ Latin ] : a chest or strong box used in ancient times as a receptacle for money or valuables and also by early Christians for reserving the consecrated bread of the Eucharist
2 capitalized : a genus (the type of the family Arcidae) of bivalve mollusks comprising the ark shells and blood clams

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History and Etymology for arca

New Latin, from Latin, chest, box

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More from Merriam-Webster on arca

Spanish Central: Translation of arca

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miscellaneous remnants or debris

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