mollusk
US /ˈmɑː.ləsk/
UK /ˈmɑː.ləsk/

1.
mollusco
an invertebrate of a large phylum (Mollusca) which comprises the snails, slugs, mussels, and octopuses. They have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
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Snails are a common type of mollusk found in gardens.
Le lumache sono un tipo comune di mollusco che si trova nei giardini.
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The ocean is home to many different species of mollusks, including clams and octopuses.
L'oceano ospita molte specie diverse di molluschi, tra cui vongole e polpi.