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• Mason jar
  Mason jar

  noun

  a glass jar with a wide mouth and an airtight screw top, much used in home canning.
• mason jar
  mason jar

  noun

  an airtight glass jar for preserving food

Mason jar

American  

noun

1. a glass jar with a wide mouth and an airtight screw top, much used in home canning.

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mason jar British  

noun

1. an airtight glass jar for preserving food

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Etymology

Origin of Mason jar

1880–85, named after John L. Mason, 19th-century American who patented it in 1858