Surfer slang (although also extends to other boardsports, and surf sports) for a young surfer. Can also be used to refer to children in general, although usually they have some association with surfing/etc.

Although usually there is no ill-meaning behind the term, it is often used to poke fun at younger surfers. It can sometimes be used as a derogatory term when younger surfers are annoying, bad or otherwise difficult.

It is frequently abbreviated to grom.
On a beach crowded with children: "Where did all the grommets come from?"
by Princess Bitch-Face June 5, 2006
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A young or inexperienced surfer or skateboarder.

A possible etymology for the word may be from the Portuguese term 'grumete', meaning the lowest ranking person on board a naval ship - this word would have been used widely in South Africa in the period when surfing was becoming popular.
There are a lot of grommets surfing at the point today, dropping on on everyone.
by DavidBan January 23, 2011
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A metal eyelet, such as in a tarp, the thing your shoelaces pass through, etc.
The grommets tore out of this cheap tarp. Guess I'll have to go to the hardware store and get some replacement grommets, and possibly a grommet tool.
by throwaway9999999 October 1, 2013
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this word usually decribes a YOUNG surfer, skateborder,a grommet can be someone who you think is a hot surfer, maybe annoying or good at what they do(surf)!!!
look at that lil hot grommet go!!!
by cboyce November 9, 2005
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A surgical device left in the ear to perforate the eardrum and help prevent earaches
My sister had grommets put in her ears
by skoon March 24, 2007
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young annoying rubbish skateboarder, rollerblader, surfer, snowboarder, (all snakeboarders) etc etc.
blaaaaaaad, get off the ramp ya grommet.
by blaaaaaaaad June 29, 2003
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