What is Bill ?
Bill is (noun) 1. a piece of paper showing the amount of money you have to pay for something The total bill came to more than £200. Ask the waiter for the bill. Don’t forget to pay the gas bill. Does the bill include VAT ? (NOTE: The US term in a restaurant is check.) 2. the hard part of a bird’s mouth The bird was picking up food with its bill. Synonym beak 3. US a piece of paper money a 10-dollar bill (NOTE: The British term is note: a 10-pound note) 4. a proposed act of parliament which, if passed by parliament, becomes law Parliament will consider two bills this week. He has drafted a bill to ban the sale of guns. 5. to fit the bill to be suitable Thanks that will fit the bill perfectly.
source: Easier English, Student Dictionary Upper Intermediate Level