Top Definition
When you let out a Greek/Roman fist pump after an exuberant moment.
"Are those black panthers? no, they're just white guys holding their fists up giving gromans"
door The Groman Definer 5 mei 2010
A teenage guy who looks like he is 45 and a father of 4.
Girl: Man that guy looks like my dad, no he's just a gro-man!
door San12345 9 maart 2016

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