a nigger who resembles a rat either by rat like actions, or just simply looking like a rat.
Oh shit bro, did you check out that sick ass nigrat?
door Brigham Lee 1 februari 2006
1 more definition
A combination of a black person and a rat. "Nigrat" refers to a poor black person that is homeless.
I gave that black nigrat some change on the street.
door cornman6969 22 december 2009