grommet

A reinforced eyelet, or a small metal or plastic ring used to reinforce an eyelet.

(nautical) A ring formed of a single strand of rope, laid in three times round, fastening the upper edge of a sail to its stay.

(flags) An eyelet at the hoist end of a flag, used to fasten the flag to its halyard.

(surfing, snowboarding, skateboarding) A young or inexperienced surfer, skateboarder, or snowboarder.

A boy serving on a ship.