deflector

noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about deflector at Wordnik → Where our words come from →

1. Something which deflects something else, especially a stream of fluid or particles.
2. A diaphragm in a lamp, stove, etc. by which the flame and gases are brought together to improve combustion.
3. A force field; an invisible barrier used as a protective shield.