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

jim crow \jim crow\ n.
   1. a negro; -- said to be so called from a popular negro
      dance song, the refrain of which is "wheel about and turn
      about and jump jim crow," produced in 1835 by thomas d.
      rice 1808-1860, a famous negro minstrel; -- considered
      disparaging and offensive. offensive slang, u. s.
      webster 1913 suppl.

   2. a legally sanctioned system of racial discrimination
      practised in the southern united states until declared
      unconstitutional in 1953 and further restricted by federal
      legislation, by means of which negroes were segregated and
      discriminated against in employment and in many places of
      public accommodation, such as parks, commercial
      establishments, and public transportation.
      pjc

[2] : WordNet (r) 2.0

jim crow
     n 1: barrier preventing blacks from participating in various
          activities with whites syn: color bar, colour bar,
          color line, colour line
     2: a crowbar fitted with a claw for pulling nails
see also:
color bar colour bar color line colour line 

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

71 moby thesaurus words for "jim crow":
   jim crow law, alien, anti-semitism, apartheid, apartness,
   black power, black supremacy, chauvinism, class consciousness,
   class distinction, class hatred, class prejudice, class war,
   color bar, color line, detachment, discrimination, division,
   ethnocentrism, exclusiveness, fascism, foreigner, insularity,
   insulation, isolation, isolationism, know-nothingism,
   male chauvinist, minority prejudice, narrowness, out-group,
   outcast, outsider, parochialism, persona non grata, privacy,
   privatism, privatization, quarantine, race hatred, race prejudice,
   race snobbery, racial discrimination, racial segregation,
   racialism, racism, recess, reclusion, red-baiting, retirement,
   retreat, rustication, seclusion, secrecy, segregation, separation,
   sequestration, sex discrimination, sexism, snobbishness,
   social barrier, social discrimination, splendid isolation,
   stranger, superpatriotism, tightness, ultranationalism,
   white power, white supremacy, withdrawal, xenophobia

Crow >> C Words
Crow, definition of term: Crow
crow_pag1.html

As The Crow Fli >> A Words
As The Crow Fli, definition of term: As The Crow Fli
as+the+crow+fli_pag1.html