We don't have synonyms for bruff yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are buff, bluff and gruff.
(n) :
Alternative form of brough (“halo around the sun or moon”) [A halo or luminous disk or ring seen around the sun or moon, and in folklore considered to portend a rainstorm.]
(n) :
Alternative form of brough (“halo around the sun or moon”) [A halo or luminous disk or ring seen around the sun or moon, and in folklore considered to portend a rainstorm.]