Definition of "clamshells" []

• Plural form of clamshell. (noun)

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• "Highland Park proposal, food containers made of polystyrene would be banned with the exception of so-called clamshells, which feature a hinge that allows the top half to close over the bottom."
• "The polystyrene foam ban would force restaurants and stores to find alternative egg cartons, meat trays, plates, "clamshells" and cups."
• "First Alert smoke and carbon monoxide alarms are packaged in clear plastic "clamshells," a packaging style popular with consumers because it allows them to see products before purchasing."