Jar - Definition and Overview

A jar is a wide-mouthed container typically made of glass or earthenware designed to hold a fluid. Types of jars include:

• Mason jar
• Canopic jar
• Leyden jar (an apparatus using a jar as the first capacitor)
• Bell jar model lung uses a jar in demonstrating the basic principles of breathing

To jar can mean to dispute, to make a harsh sound, or to put something in a jar.

Jar can also refer to:

• The jar (file format) used with Java programming language applications

Other topics related to the word jar:

• Jarhead, slang for a United States Marine
• Jar Jar Binks, a character in the science fiction Star Wars universe