We don't have synonyms for big brown yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are big iron, jim brown and king brown.
(N) :
(foaled April 10, 2005, in Kentucky) an American Thoroughbred racehorse who won the 2008 Kentucky Derby and 2008 Preakness Stakes and was the 2008 Champion Three-Year-Old.
(N) :
William Clifford Brown (September 30, 1920 – August 30, 1980), who went by the name Big Brown, was a mid-twentieth century American street poet, performer, and recording artist.
(N) :
(foaled April 10, 2005, in Kentucky) an American Thoroughbred racehorse who won the 2008 Kentucky Derby and 2008 Preakness Stakes and was the 2008 Champion Three-Year-Old.
(N) :
William Clifford Brown (September 30, 1920 – August 30, 1980), who went by the name Big Brown, was a mid-twentieth century American street poet, performer, and recording artist.