grom·met / ˈgrämit/ • n. 1. an eyelet placed in a hole in a sheet or panel to protect or insulate a rope or cable passed through it or to prevent the sheet or panel from being torn.2. Med. a tube surgically implanted in the eardrum to drain fluid from the middle ear.3. inf. a young or inexperienced skier, snowboarder, surfer, or skateboarder: mega moves that make gods out of grommets.