[1] : The Collaborative International Dictionary of English v.0.48

urchin \ur"chin\, a.
   rough; pricking; piercing. r. "helping all urchin blasts."
   --milton.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

urchin \ur"chin\ ^u"chi^n, n. oe. urchon, irchon, a
   hedgehog, of. ire,con, eri,con, heri,con, herichon, f.
   h'erisson, a derivative fr. l. ericius, from er a hedgehog,
   for her; akin to gr. chh`r. cf. herisson.
   1913 webster
   1. zool. a hedgehog.
      1913 webster

   2. zool. a sea urchin. see sea urchin.
      1913 webster

   3. a mischievous elf supposed sometimes to take the form a
      hedgehog. "we 'll dress them like urchins, ouphes, and
      fairies." --shak.
      1913 webster

   4. a pert or roguish child; -- now commonly used only of a
      boy.
      1913 webster

            and the urchins that stand with their thievish eyes
            forever on watch ran off each with a prize. --w.
                                                  howitt.
      1913 webster

            you did indeed dissemble, you urchin you; but
            where's the girl that won't dissemble for an
            husband?                              --goldsmith.
      1913 webster

   5. one of a pair in a series of small card cylinders,
      arranged around a carding drum; -- so called from its
      fancied resemblance to the hedgehog. --knight.
      1913 webster

   urchin fish zool., a diodon.
      1913 webster
see also:
herisson sea urchin urchin fish 

[3] : WordNet (r) 2.0

urchin
     n : poor and often mischievous city child

[4] : Moby Thesaurus II by Grady Ward, 1.0

64 moby thesaurus words for "urchin":
   arab, jd, beach bum, beachcomber, beggar, bo, brat, bum, bummer,
   cub, dickens, dogie, elf, enfant terrible, gamin, gamine,
   guttersnipe, hobbledehoy, hobo, holy terror, homeless waif, idler,
   imp, juvenile delinquent, landloper, lazzarone, little monkey,
   loafer, losel, minx, monkey, mudlark, piker, puck, punk, punk kid,
   pup, ragamuffin, ragman, ragpicker, rounder, ski bum, spoiled brat,
   stiff, stray, street arab, street arab, street urchin, sundowner,
   surf bum, swagman, swagsman, tatterdemalion, tennis bum, tramp,
   turnpiker, vag, vagabond, vagrant, waif, waifs and strays, wastrel,
   whelp, whippersnapper

[5] : Jargon File (4.3.1, 29 Jun 2001)

urchin n. see munchkin.


see also:
munchkin 

[6] : The Free On-line Dictionary of Computing (27 SEP 03)

urchin
     
        see munchkin.
     
        jargon file
     
     
see also:
munchkin jargon file 

Urchin >> U Words
Urchin, definition of term: Urchin
urchin_pag1.html

Urchin Fish >> U Words
Urchin Fish, definition of term: Urchin Fish
urchin+fish_pag1.html

Street Urchin >> S Words
Street Urchin, definition of term: Street Urchin
street+urchin_pag1.html

Sea Urchin >> S Words
Sea Urchin, definition of term: Sea Urchin
sea+urchin_pag1.html

Heart Urchin >> H Words
Heart Urchin, definition of term: Heart Urchin
heart+urchin_pag1.html