As a Noun: 1. A BUTTERFLY NEEDLE is a type of needle used for drawing blood from parts of the body where blood vessels are close to the skin, i.e. the hand or wrist. It has plastic "wings" like a butterfly. Note: 1. There appears to be no commonly used Auslan sign for BUTTERFLY NEEDLE. If you know a sign for BUTTERFLY NEEDLE used by you or other Auslan users (deaf people or interpreters) please go to "missing sign feedback" and supply details. Thank you.