As a Noun: 1. A COLOSTOMY BAG is a bag that attaches to the stomach and collects body wastes (i.e. faeces). Note: 1. There appears to be no commonly used Auslan sign for COLOSTOMY BAG. If you know a sign for COLOSTOMY BAG used by you or other Auslan users (deaf people or interpreters) please go to "missing sign feedback" and supply details. Thank you.