A grommet (grom, or gremmie) is a young participant in extreme sports.
In recent years, this has expanded to include other extreme sports, most notably skiing, skateboarding, roller derby and snowboarding.
[1] The first contextual use of the word appears in a 1964 article by the journalist, Nicholas Tomalin, who on a visit to Newquay in Cornwall noted that: "A surfer who is no good or just beginning is a 'gremmie'.
[3] The term "grommet" was used in Lockie Leonard, Legend by Tim Winton in 1997: "Things are never as simple as they seem, not even for grommets".
This earliest citation was a few years after the creation of the Wallace and Gromit animated films.