jar in WordNet English dictionary

1. shock physically
   "Georgia was shaken up in the Tech game"
   jar  shake up  bump around 
   
2. be incompatible; be or come into conflict
   "These colors clash"
   clash  jar  collide 
   
3. place in a cylindrical vessel
   "jar the jam"
   jar 
   
4. affect in a disagreeable way
   "This play jarred the audience"
   jar 
   
5. move or cause to move with a sudden jerky motion
   jolt  jar 
   

1. a vessel (usually cylindrical) with a wide mouth and without handles
   jar 
   
2. a sudden jarring impact
   "the door closed with a jolt"; "all the jars and jolts were smoothed out by the shock absorbers"
   jolt  jar  jounce  shock 
   
3. the quantity contained in a jar
   "he drank a jar of beer"
   jar  jarful