Definition of "brostep"

In a crowded field for negative epithets, brostep was the term that won as a pejorative, the buzzword of a concerted but increasingly futile campaign to mock the masculinist tendency in dubstep out of existence. […] But then, as so often happens, the word began to be embraced as a positive identity.

2013 , Simon Reynolds, Energy Flash‎, new and revised edition, Faber & Faber

By the late 2000s, dubstep had splintered into numerous factions, from brostep to wonky to the evocative “purple,” […]

2015, Jan Kyrre Berg O. Friis, Robert P. Crease, Technoscience and Postphenomenology: The Manhattan Papers