Definition of brownshirts:
(n) :
(historical) A uniformed member of the German Nazi Party (NSDAP), especially a storm trooper of the Sturmabteilung.
(n) :
Any member of a fascist party; any person accused of being neofascist or neo-Nazi.
(n) :
Alternative letter-case form of Brownshirt. [(historical) A uniformed member of the German Nazi Party (NSDAP), especially a storm trooper of the Sturmabteilung.]