1. [n]  a vessel (usually cylindrical) with a wide mouth and without handles
2. [n]  a sudden impact; "the door closed with a jolt"
3. [n]  the quantity contained in a jar; "he drank a jar of beer"
4. [v]  place in a jar
5. [v]  affect in a disagreeable way; "This play jarred the audience"
6. [v]  move or cause to move with a sudden jerky motion
7. [v]  shock physically; "Georgia was shaken up in the Tech game"
8. [v]  be incompatible; be or come into conflict; "These colors clash"

JAR is a 3 letter word that starts with J.

1. \Jar\, n. [See {Ajar}.]
   A turn. [Only in phrase.]
   
   {On the jar}, on the turn, ajar, as a door.
   
   

2. \Jar\, n. [F. jarre, Sp. jarra, from Ar. jarrah ewer; cf.
   Pers. jarrah.]
   1. A deep, broad-mouthed vessel of earthenware or glass, for
      holding fruit, preserves, etc., or for ornamental
      purposes; as, a jar of honey; a rose jar. --Dryden.
   
   2. The measure of what is contained in a jar; as, a jar of
      oil; a jar of preserves.
   
   {Bell jar}, {Leyden jar}. See in the Vocabulary.
   
   

3. \Jar\, v. i. [imp. & p. p. {Jarred}; p. pr. & vb. n.
   {jarring}.] [Cf. OE. charken to creak, AS. cearcian to gnash,
   F. jars a gander, L. garrire to chatter, prate, OHG. kerran
   to chatter, croak, G. quarren to grumble, and E. jargon,
   ajar.]
   1. To give forth a rudely quivering or tremulous sound; to
      sound harshly or discordantly; as, the notes jarred on my
      ears.
   
            When such strings jar, what hope of harmony ?
                                                  --Shak.
   
            A string may jar in the best master's hand.
                                                  --Roscommon.
   
   2. To act in opposition or disagreement; to clash; to
      interfere; to quarrel; to dispute.
   
            When those renowned noble peers Greece Through
            stubborn pride among themselves did jar. --Spenser.
   
            For orders and degrees Jar not with liberty, but
            well consist.                         --Milton.
   
   

4. \Jar\, v. t.
   1. To cause a short, tremulous motion of, to cause to
      tremble, as by a sudden shock or blow; to shake; to shock;
      as, to jar the earth; to jar one's faith.
   
   2. To tick; to beat; to mark or tell off. [Obs.]
   
            My thoughts are minutes, and with sighs they jar
            Their watches on unto mine eyes.      --Shak.
   
   

5. \Jar\, n.
   1. A rattling, tremulous vibration or shock; a shake; a harsh
      sound; a discord; as, the jar of a train; the jar of harsh
      sounds.
   
   2. Clash of interest or opinions; collision; discord; debate;
      slight disagreement.
   
            And yet his peace is but continual jar. --Spenser.
   
            Cease, cease these jars, and rest your minds in
            peace.                                --Shak.
   
   3. A regular vibration, as of a pendulum.
   
            I love thee not a jar of the clock.   --Shak.
   
   4. pl. In deep well boring, a device resembling two long
      chain links, for connecting a percussion drill to the rod
      or rope which works it, so that the drill is driven down
      by impact and is jerked loose when jammed.
   
   

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