Top Definition
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!
by San12345 March 09, 2016

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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"
by The Groman Definer May 05, 2010

The Urban Dictionary Mug

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