Jar

A jar is small, approximately cylindrical container for food, made of glass or clay, and also plastic as in the case of a "jar" of peanut butter.Jar or JAR can also mean:

* Containers:
** Mason jar, a jar used to preserve various foods (eg fruit, jam, vegetables)
** Kilner jar, another type of jar for storing foods
** Mayonnaise jar, a mason jar especially made for mayonnaise
** Canopic jar, used in ancient Egyptian burial
** Leyden jar, a simple capacitor
** Killing jar, a device used by entomologists to kill captured insects
* Jar, an obsolete unit of capacitance once used by the Royal Navy
* J.A.R., a song by Green Day
* JAR (file format)
* JAR (software), for data compression
* Jar, Azerbaijan, in the Zaqatala rayon
* Jar, Norway, a centre in the municipality of Bærum
* Jar (Pakistan), a town in the Federally Administered Tribal Areas' Bajaur Agency.
* Jars, Cher, in the French département of Cher
* Jars of Clay, a musical group
* Jewish Autonomous Region of Russia
* Joint Aviation Requirements issued by Europe's Joint Aviation Authorities
* James A. Rhodes Arena
* Jose Antonio Reyes, a Spanish professional footballer