definition of
jar

[1] #1 jar n. a vessel (usually cylindrical) with a wide mouth and without handles. wn

[2] #2 jar v. [clash, collide] be incompatible; be or come into conflict; "These colors clash". wn

[3] #3 jar v. [jolt] move or cause to move with a sudden jerky motion. wn

[4] #4 jar n. [jarful] the quantity contained in a jar; "he drank a jar of beer". wn

[5] #5 jar n. [jolt, jounce, shock] a sudden jarring impact; "the door closed with a jolt"; "all the jars and jolts were smoothed out by the shock absorbers". wn