Slang in some South American countries for a black person, specifically a small black person, but used in many areas as a derogative term. Diminutive of Nigro, meaning nigga or negro in these respective areas.
Most accurate literal translation would be "niglet", though the word is used more like the word nigger, maybe not the same as nigga.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".