noun

• (originally) An earthenware container, either with two or no handles, for holding oil, water, wine, etc., or used for burial.
  "She refilled the jar with peanuts today evening."
• (British, Ireland, colloquial) A pint glass
• (British, Ireland, colloquial, metonymic) A glass of beer or cider, served by the pint.
  "About a shopping trolley, I thought I'd let ye know. Ya'd try to push it straight but it never seems ta go. Ya'd wobble through the car park, hopping off the cars. Anyone would think ya had a few auld jars."

verb

• (transitive) To preserve (food) in a jar.
  "It's important to consider the safety of jarring food. Eating food that has been spoiled because it wasn't jarred properly correctly can result in the disease botulism."

noun

• (countable) A clashing or discordant set of sounds, particularly with a quivering or vibrating quality.
• (countable, also figuratively) A quivering or vibrating movement or sensation resulting from something being shaken or struck.
  "[...] yet (good-deed) Leontes, I loue thee not a Iarre o'th' Clock, behind What Lady she her Lord. You'le stay?"
• (countable, by extension) A sense of alarm or dismay.
• (countable) The effect of something contradictory or discordant; a clash.
  "Besides the jar of contrast there came to her a chill self-reproach that she had not returned sooner, to help her mother in these domesticities, instead of indulging herself out-of-doors."

verb

• (transitive) To knock, shake, or strike sharply, especially causing a quivering or vibrating movement.
  "He hit it with a hammer, hoping he could jar it loose."
• (transitive) To harm or injure by such action.
• (transitive, figuratively) To shock or surprise.
  "I think the accident jarred him, as he hasn’t got back in a car since."
• (transitive, figuratively) To act in disagreement or opposition, to clash, to be at odds with; to interfere; to dispute, to quarrel.
  "VVhen thoſe renoumed^([sic – meaning renowned]) noble Peres of Greece, / thrugh ſtubborn pride amongſt theſelues did iar / forgetfull of the famous golden fleece, / then Orpheus vvith his harp theyr ſtrife did bar."