Question

what do you mean by Treasury Bill ?

Answer 1

Treasury Bill can be defined as the short term debt obligation by the US GOVERNMENT's treasury department.

Answer 2

Hi here is your answer
Treasury Bill  is a short-term debt obligation backed by the TreasuryDepartment of the U.S. government with a maturity of less than one year, sold in denominations of $1,000 up to a maximum purchase of $5 million on noncompetitive bids. 
Hope its help u