1859, British slang, "lark, spree, rough enjoyment," of uncertain origin. Later also "a fixed prize-fight."

trouble

n. In Commonwealth hackish, `barney' is to fred (sense #1) as bar is to foo. That is, people who commonly use `fred' as their first metasyntactic variable will often use `barney' second [..]

 – A sound-minimizing blanket placed over a camera to reduce the noise emitting from its moving mechanisms.

a blanket placed over the film camera to reduce the noise of the moving mechanisms inside; see also blimp.  

Noun. An argument. [Late 1800s] {Informal}

a surfer that is not cool, untalented, rookie

A quilted cloth that fits around a camera to reduce camera noise. Term is believed to come from a horse blanket, “barney blanket”.

Barnard Castle (pictured above). A toon in Teesdale.. A barney might also be a fight Bastle

v. To embrace or hug; to kiss; to “smooch.” {An affectionate Boonter named Barney addressed women he knew with such names as “darling‘” and often kissed them in greeting them and in saying goodbye.} [..]

Joshua Barney was born in Baltimore, Maryland in 1759.  He served in the Continental Navy during the Revolutionary War and then in the United States Navy in the War of 1812. He held the rank of Commodore.

An inexperienced surfer.

Diminutive of Barnabas, Bernard or Barnaby.