gobo

noun4

1. •
   A screen (often in disc form) placed between a light and an illuminated actor or object in order to diffuse the glare.
2. •
   A device used to shield a microphone from extraneous sounds.
3. •
   A template inserted over a light source to control the shape of the thrown light.
4. •
   The taproot of young edible burdock plants (Arctium lappa), eaten as a root vegetable.

   • While oriental and specialty markets sell Gobo root to Japanese cooks, herbal medicine enthusiasts use common burdock. — 1988