Noun

• S: (n) jar (a vessel (usually cylindrical) with a wide mouth and without handles)
• S: (n) jar, jarful (the quantity contained in a jar) "he drank a jar of beer"
• S: (n) jolt, jar, jounce, shock (a sudden jarring impact) "the door closed with a jolt"; "all the jars and jolts were smoothed out by the shock absorbers"
• direct hypernym / inherited hypernym / sister term
• S: (n) blow, bump (an impact (as from a collision)) "the bump threw him off the bicycle"
• S: (n) jolt, jar, jounce, shock (a sudden jarring impact) "the door closed with a jolt"; "all the jars and jolts were smoothed out by the shock absorbers"
• S: (n) concussion (any violent blow)
• S: (n) rap, strike, tap (a gentle blow)
• S: (n) knock, bash, bang, smash, belt (a vigorous blow) "the sudden knock floored him"; "he took a bash right in his face"; "he got a bang on the head"
• S: (n) pounding, buffeting (repeated heavy blows)
• S: (n) sideswipe (a glancing blow from or on the side of something (especially motor vehicles))
• S: (n) slap, smack (a blow from a flat object (as an open hand))
• derivationally related form

Verb

• S: (v) clash, jar, collide (be incompatible; be or come into conflict) "These colors clash"
• S: (v) jolt, jar (move or cause to move with a sudden jerky motion)
• S: (v) jar, shake up, bump around (shock physically) "Georgia was shaken up in the Tech game"
• S: (v) jar (affect in a disagreeable way) "This play jarred the audience"
• S: (v) jar (place in a cylindrical vessel) "jar the jam"