As a Noun: 1. A metal bar attached to the back of a vehicle to allow it to tow a trailer or caravan. English = tow bar. Note: 1. A combination of the Auslan signs CAR and BACK, with a representation of a hook item that projects from under another object. Source of this recommended sign: Victorian College for the Deaf. 2. If you know a sign for TOW BAR used by you or other Auslan users (deaf people or interpreters) please go to "Report missing sign" and supply details. Thank you.