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"note," 1776, short for chitty, from Mahrati (Hindi) chitthi "letter, note," from Sanskrit chitra-s "distinctively marked" (cf. cheetah).
An impudent and spirited young woman: a saucy chit
[1640s+; origin uncertain]
A bill for food or drink, which one signs or initials instead of paying immediately
[1920s+; In the sense ''note,'' chit is attested from the 1780s; shortening of Anglo-Indian chitty, ''letter, note,'' fr Hindi]