Definition of jar

• n. - A turn. [Only in phrase.]
• n. - 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.
• n. - The measure of what is contained in a jar; as, a jar of oil; a jar of preserves.
• v. i. - To give forth a rudely quivering or tremulous sound; to sound harshly or discordantly; as, the notes jarred on my ears.
• v. i. - To act in opposition or disagreement; to clash; to interfere; to quarrel; to dispute.
• v. t. - 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.
• v. t. - To tick; to beat; to mark or tell off.
• n. - A rattling, tremulous vibration or shock; a shake; a harsh sound; a discord; as, the jar of a train; the jar of harsh sounds.
• n. - Clash of interest or opinions; collision; discord; debate; slight disagreement.
• n. - A regular vibration, as of a pendulum.
• n. - 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.