A grommet is a ring or eyelet made of metal or plastic surrounding a hole in cloth or leather to prevent it tearing.
Another type of grommet is made of plastic or rubber and is used to stop a wire being earthed when it passes through a hole in a metal component. The word is also in general use to name a ring that forms a gasket, particularly beneath the head of a bolt, or to create a seal where sections of pipe are butted together.
In the world of surfing grommet is a slang term used to refer to a young, inexperienced surfer.
1. a metal or plastic ring that surrounds a hole in cloth to prevent it from tearing
2. [BRITISH] a small tube that is put into a child’s ear to remove liquid that is blocking it