Sentence:  Coming from a South Indian Tamil family that had settled in the western India, “<WSD>Madrasi</WSD>” was my family's nickname in the neighbourhood and so was mine at school. The name in itself was obnoxious, not to mention the stereotyping it brought along with it. For North Indians, anyone from the South was a <WSD>Madrasi</WSD>, irrespective of where they came from. 
Meaning of the word marked with <WSD> tags:  ("by extension") A native of South India; a person of South Indian extraction ("exonym; often considered offensive").