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| plas·tron [ plástrən ] (plural plas·trons) |
noun |
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| Definition: |
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1. under part of tortoise shell: the under portion of the shell of a turtle or tortoise that is made up of several, often hinged, bony plates joined to the carapace by bridges located between the animal's legs
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2. water-repellent gill in water insects: a tuft of water-repellent hairs on the bodies of some insects that live in water, having the function of trapping air bubbles and acting as an external gill
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3. steel breastplate: a steel breastplate worn as part of medieval armor beneath a chain-mail tunic hauberk
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4. chest pad for fencers: a leather-covered pad for protecting the chest, worn by professional fencers
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| [Early 16th century. Via French< Italian piastrone "large breastplate" < piastra "metal plate"] |
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  plas·tral adjective |
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