nig·ger /ˈnɪgɚ/
  黑人,黑色土人,黑褐色染料
  nig·ger n. A negro; -- in vulgar derision or depreciation.  It is usually intended and interpreted as highly insulting and vulgar. [Low, deprecatory, and vulgar]
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  nigger
       n : (ethnic slur) offensive name for a Black person; "only a
           Black can call another Black a nigga" [syn: nigga, spade,
            coon, jigaboo, nigra]