As a Noun: 1. HEART FAILURE is a serious medical condition in which someone's heart does not work as well as it should, sometimes stopping completely so that they die. Note: 1. There appears to be no commonly used Auslan sign for HEART FAILURE. If you know a sign for HEART FAILURE used by you or other Auslan users (deaf people or interpreters) please go to "report missing sign" and supply details. Thank you.