1. : any of numerous bivalve mollusks especially of the families Cardiidae and Carditidae with shells that are heart-shaped in outline when viewed from the end
2. : the shell of a heart-shell mollusk
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1. any of numerous bivalve mollusks, esp. of the families Cardiidae and Carditidae, having a heart-shaped shell.
2. the shell itself.
[1745-55]
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heart cockle or heart shell noun
A mollusc (genus Isocardia) or its shell, like a cockle coiled at the bosses
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Main Entry: ↑heart
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heart shell see ↑heart cockle above.
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Main Entry: ↑heart
Useful english dictionary. 2012.