touchback - (American football) a play in which the opposing team has kicked the football into your end zone.
From Wikipedia, the free encyclopedia. A check digit is a form of redundancy check used for error detection on identification numbers, such as bank account numbers, which are used in an application where they will at least sometimes be input manually. It is analogous to a binary parity bit used to check for errors in computer-generated data.
What is a Routing Number? Routing number is a Nine digit code assigned by American Bankers Association (ABA). It uniquely identifies the financial institution and check-processing center. Routing number is also referred as Bank Routing number, routing transit number (RTN), ABA routing number and swift codes.