having ragged notches, points, or teeth; zigzag: the jagged edge of a saw; a jagged wound.
having a harsh, rough, or uneven quality.

1400–50; late Middle English. See jag1, -ed2

jaggedly, adverb
jaggedness, noun
unjagged, adjective
Dictionary.com Unabridged


1 [jag]
a sharp projection on an edge or surface.
verb (used with object), jagged, jagging.
to cut or slash, especially in points or pendants along the edge; form notches, teeth, or ragged points in.
verb (used without object), jagged, jagging.
to move with a jerk; jog.

1350–1400; late Middle English jagge (noun), jaggen (v.), of obscure origin

jagless, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
jag or jagg1 (dʒæɡ)
vb , jags, jagging, jagged
1.  (tr) to cut unevenly; make jagged
2.  (Austral) to catch (fish) by impaling them on an unbaited hook
n, —vb
3.  (Scot) jab an informal word for jab
4.  a jagged notch or projection
[C14: of unknown origin]
jagg or jagg1
n, —vb
[C14: of unknown origin]

jag2 (dʒæɡ)
1.  a.  intoxication from drugs or alcohol
 b.  a bout of drinking or drug taking
2.  a period of uncontrolled activity: a crying jag
[of unknown origin]

Jag (dʒæɡ)
informal a Jaguar car: often understood as a symbol of affluence

abbreviation for
Judge Advocate General

jagged (ˈdʒæɡɪd)
having sharp projecting notches; ragged; serrate

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

"period of unrestrained activity," 1887, Amer.Eng. from sense "load of hay or wood" (1597), of unknown origin, used in U.S. colloquial speech from 1834 to mean "a quantity, a lot."

1440, from obs. verb jaggen (1373) "to notch or nick," Scot. and northern English, of unknown origin. Originally of garments with regular "toothed" edges; meaning "with the edge irregularly cut" is from 1577.
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang Dictionary

jag definition

  1. n.
    a Jaguar automobile. : What I really want is a jag.
  2. n.
    a drinking bout; a prolonged state of alcohol or drug intoxication. : Is he off on another jag, or is this the same one?
  3. n.
    a prolonged state of emotional excess, especially crying. : I've been on a jag and can't get my work done. , Is she still on her crying jag?
  4. n.
    a drug rush. (Drugs.) : This stuff has no jag at all.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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jagged definition

  1. mod.
    alcohol intoxicated. : Man, is that chick jagged!
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
Cite This Source
American Heritage
Abbreviations & Acronyms
judge advocate general
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
It has towering cliffs, jagged ridges, and deep valleys.
Deaths due to state-based conflicts show jagged peaks in the two world wars,
  followed by a bumpy but consistent trailing-off.
The jagged edge mixes the airflow coming out of the jet engine in a way that
  reduces turbulence.
Out of the jagged hole hangs the blade of a propeller.
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