Definition of jar noun from the Oxford Advanced Learner's Dictionary

     

    jar

     noun
    noun
    BrE BrE//dʒɑː(r)//
     
    ; NAmE NAmE//dʒɑːr//
     
     
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  1. 1[countable] a round glass container, with a lid, used for storing food, especially jam, honey, etc. a storage jar see also jam jar
  2. 2[countable] a jar and what it contains a jar of coffee
  3. 3[countable] a tall container with a wide mouth, with or without handles, used in the past for carrying water, etc. a water jar see also bell jar
  4. 4[countable] (British English, informal) a glass of beer Do you fancy a jar after work?
  5. 5[singular] an unpleasant shock, especially from two things being suddenly shaken or hit The fall gave him a nasty jar.
  6. Word Originnoun senses 1 to 4 late 16th cent.: from French jarre, from Arabic jarra. noun sense 5 late 15th cent. (as a noun in the sense ‘disagreement, dispute’): probably imitative.Extra examples She filled the jars with the tomato sauce. a jar full of pickled onions She bought a set of storage jars for the kitchen. These enormous stone jars are thought to be more than 2 000 years old. a jar of jam/​coffee/​honey an empty jam jar
See the Oxford Advanced American Dictionary entry: jar