Sorry, no definitions found.
Sorry, no etymologies found.
Other recent "bro" blends are a bit more macho: brogrammer (bro + programmer), "a programmer who behaves in a stereotypically frat-boy manner"; bromance (bro + romance) "a close but nonsexual relationship between two men"; and brodeo (bro + rodeo), "a social gathering primarily or exclusively of men."
The floor was a rowdy, sweaty brodeo, with an XY-to-XX ratio no better than 3 to 1.
The floor was a rowdy, sweaty, brodeo, with a XY-to-XX ratio no better than 3: 1.
I also noticed that the place was filled with mostly guys, a veritable bromantic brodeo.