Definition & Meaning of "nigga nod"in English

What is the origin of the term "nigga nod" and how is it used?

"nigga nod" is a slang term that emerged in African American communities in the 20th century, describing a subtle, often rhythmic down–up–down nod of the head used to acknowledge, show respect, or signal agreement with another Black person. The gesture and term arise from informal social interactions, particularly in urban and hip-hop cultures, as a nonverbal way to communicate solidarity or recognition. The term is context-dependent: neutral or respectful within Black communities, but it can be offensive or inappropriate if used outside that cultural context due to its racialized language.