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  • noun Any of several designs of closure used to seal bottles


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  • a bottle cap is a metal or plastic cap affixed to a bottle to keep its contents secure. Bottle caps can be removed using a bottle opener, or for newer designs, just twisted off. Often they are designed to be reattached to the bottle in case all the contents are not consumed/used. Bottle caps often have the name of the product their bottles contained. They can be lined with cork or plastic.

    June 28, 2009