Etymology Dictionary

JAR (1),  to make a discordant noise, creak, clash, quarrel.  (E.)   'Out of al ioynt ye iar;' Skelton, Duke of Albany, l. 378.   And see Shak. Tam. Shrew, iii. I. 39, 47; v. 2. I.   α. Jar stands for an older form char, only found in the derivative charken, to creak like a cart or barrow (Prompt. Parv.), also to creak like a door (Gower, C. A. ii. 102).   β. Again, char stands for an older kar, answering to the Teut. base KAR, to make a harsh sound, murmur, complain, seen in Goth. karón, to sorrow, O. Sax. karón, to lament, and in E. care, crane ( = car-ane); see further under Care, Crane, Jargon.   This Teut. base KAR is from ✔GAR, to call, cry, whence also Lat. garrire, to prate, croak, garrulus, talkative; see Garulous.   Der. jar, sb., spelt jarre, Spenser, F. Q. iii. 3. 23.

JAR (2),  an earthen pot.  (F.,—Pers.)   'A great jar;' Ben Jonson, tr. of Horace's Art of Poetry; l. 28.   And in Cotgrave.—O. F. jare, 'a jarre,' Cot.; mod. F. jarre.   [Cf. Span. jarra, a jug, pitcher; Ital. giara, giarra, 'a iarre;' Florio.]—Pers. jarrah, a jar. earthen water-vessel; cf. Pers. jurrah, a little cruise, or jar; Rich. Pers. Dict. p. 504, col. 2.   Probably borrowed by the Spanish from the Arabs.