Sansi (Devnagari: सैंसी) (Gurmukhi: ਸੈਂਸੀ) are a formerly nomadic people from India that were classified as a criminal tribe in the 19th century by the British during the Raj period. They were stealing food supply from British Government. That's why the British government declared them dacoit. [1][2]
jai
was invoked but never defined (see the help page).