1. a signed note for money owed for food, drink, etc. 2. any receipt, voucher, or similar document, esp. of an informal nature. [1775-85; short for chitty chit [2] n. 1. a child or young person, esp. a pert girl. [1615-25; ME; perh. akin to KI
This is all I've found: CHIT : Container Hazard Identification Table (shipping/transportation) or the bill in a restaurant; "he asked the waiter for the check"
No,no, you are absolutely wrong this time. I only capitalized the word to identify it. The word employed only smaller letters.
Context : It seems George had done some mischief(not confirmed,I'm talking about politics, so better be safe!) in purchasing war materials during Kargil War and recently there are more voices supporting his mischief.
I found another example of how 'clean chit' can be used:
The government on Thursday gave a clean chit to 12 soft drink brands, saying that their samples tested were 'well within the safety limits' prescribed for packaged drinking water at present.
I think the expression 'getting a clean chit' means something like 'getting a clean bill' in the expression 'getting a clean bill o