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pinna| In botany, the primary division of a pinnate leaf. In mammals, the pinna is the external part of the ear. |
Pinna| Genus of bivalve molluscs; the species are popularly termed wingshells. Some species attain a length of about 60 cm/24 in and the long, delicate byssus (mass of threads by which they attach to rocks) is sometimes woven into cloth or made into gloves and bracelets. |
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