As a Noun: 1. A unit of length equal to one hundred centimetres. English = metre, meter (US). Note: 1. This sign was created for the Australasian Signed English in the 1980s. It uses the letter M. It has been accepted and used as an Auslan sign by some deaf people, especially in education by teachers of the deaf, their students, and interpreters. Look at other matches for ‘metre’ to see a more common way of expressing this in Auslan.