Other definitions of BRO:

• Short for "brother". Similar to dude, man, or buddy, the term can be used to address anybody and have various tones depending on context.
• A short version of "brother". Attached to the end of phrases to make them more jocular, this term saw a rise in popularity during the 2010s. The moniker comes from "bro culture", which is an evolution of later surf culture that is concerned with sports and partying. When combined with other adjectives, can further refine into either insult or endearing nickname.
• A short nickname shared among young males who think of each other as brothers. When threatened, the term can also be used during intimidation stances to address opponents.
• A slang term for close friends or confidants that are so close, they're like brothers. Similar to "sis" which is generally used among close female friends.

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