As a Noun: 1. A short tube, usually tapered, that fits into one end of an icing bag. Used for making lines and decorations with icing. English = nozzle. Note: 1. The following are suggested signs or sign expressions for ‘nozzle’. Source: DeafConnectED, Melbourne Polytechnic. 2. Suggested sign #1 3. 4. Suggested sign #2 5. 6. Suggested sign #3 7.