1 definition by Suzan Deeley

The typical gym guy who spends most of his time in the gym fails to follow gym etiquette or is prone to bad gym habits. He is the charater-foil of a gym rat/pro, well-known for spending a lot of time in the gym but he does it efficiently.
"Triston is a gym bro; he trains his chest for 4 hours very day of the week."

"John skips leg day and never does cardio; he is a gym bro."

"Austin doesn't give anyone a chance to use the weights; he is such a gym bro."
by Suzan Deeley March 7, 2018
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