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

negro \ne"gro\ n=e"gr-o, n.; pl. negroes
   n=e"gr=oz. sp. or pg. negro, fr. negro black, l.
   niger; perh. akin to e. night.
   a black man; especially, one of a race of black or very dark
   persons who inhabit the greater part of tropical africa, and
   are distinguished by crisped or curly hair, flat noses, and
   thick protruding lips; also, any black person of unmixed
   african blood, wherever found.
   1913 webster

   2. a person of dark skin color descended at least in part
      from african negroes; in the united states, an
      african-american. u.s. usage, sometimes considered
      offensive.
      pjc
see also:
negroes african-american 

[2] : WordNet (r) 2.0

negro
     adj : relating to or characteristic of or being a member of the
           traditional racial division of mankind having brown to
           black pigmentation and tightly curled hair
     n : a person with dark skin who comes from africa or whose
         ancestors came from africa syn: black, black person,
          blackamoor, negroid
     also: negroes pl
see also:
black black person blackamoor negroid negroes 

[3] : WordNet (r) 2.0

negroes
     see negro
see also:
negro 

Negroes >> N Words
Negroes, definition of term: Negroes
negroes_pag1.html