As a Verb or Adjective: 1. To BREAK WATER means that just before you have a baby fluid from the amniotic sac (a bag of fluid surrounding the unborn baby) is released because the sac ruptures (breaks). This can happen naturally, or a medical practitioner can break it. Note: 1. There appears to be no commonly used Auslan sign for BREAK WATER. If you know a sign for BREAK WATER used by you or other Auslan users (deaf people or interpreters) please go to "missing sign feedback" and supply details. Thank you.