ABA transit number ABA transit number /ˌeɪ biː eɪ ˈtrænzɪt ˈnʌmbər/

noun

1. An identification number consisting of a two-part code assigned to banks and savings associations; the first part shows the location and the second identifies the bank itself  ( ABA transit number , bank identification number , BIN )
   an identification number consisting of a two-part code assigned to banks and savings associations; the first part shows the location and the second identifies the bank itself