What is the meaning of Grom?

A young surfer, wakeskater, wakeboarder, snowboarder, skimboarder, skateboarder, or kiteboarder.

inflection of grommen:

1. first-person singular present indicative
2. (in case of inversion) second-person singular present indicative
3. imperative

first-person singular present indicative

(in case of inversion) second-person singular present indicative

imperative

village

A boy; a male child (of any age)

An attendant, servant, or follower (of a noble)

A man, especially a commoner.

splendid, excellent, fine, very nice

alternative form of gram

thunder

thunder

second-person singular imperative of gromić

dative plural of gra

alternative form of groom

thunder

Source: wiktionary.org