What is Air Waybill?

Legal Definition
An air waybill (AWB) or air consignment note is a receipt issued by an international airline for goods and an evidence of the contract of carriage, but it is not a document of title to the goods. Hence, the air waybill is non-negotiable.
-- Wikipedia
Legal Definition
A bill that is a receipt of goods and a contract to ship by air the goods. The terms and conditions are listed on it as well as a list of the goods and charges. There is a standard format AWB used worldwide. AKA airbill or air consignment note.