Hindustani language
The commonly used Hindi term "shahi zeera" may be a distortion of "syahi" (black in Persian) "zeera". However, in the Hindustani language, the term "syahi" also means "inky black". In Bengali, "kalo zeera" also means black cumin, but refers to "Nigella", not "E. persica". "Nigella" is widely used as a spice in Bengali food.