Chit

Chit: (Hindi – Chitti). A letter. Note: Official Form. Voucher, etc. "Chit" as an adopted word, dates back to the old East India Company times, and is over 150 years old, being originally for Club and Mess vouchers. It early became a Service word for correspondence, official and other, and is fully established nowadays. At the front in the War, everything written was colloquially a "chit," from private letters to official correspondence.