Source : Webster's Revised Unabridged Dictionary (1913)

Picayune \Pic`a*yune"\, n. [From the language of the Caribs.]
   A small coin of the value of six and a quarter cents. See
   {Fippenny bit}. [Local, U.S.]

Source : WordNet®

picayune
     adj : (informal terms) small and of little importance; "a fiddling
           sum of money"; "a footling gesture"; "our worries are
           lilliputian compared with those of countries that are
           at war"; "a little (or small) matter"; "Mickey Mouse
           regulations"; "a dispute over niggling details";
           "limited to petty enterprises"; "piffling efforts";
           "giving a police officer a free meal may be against the
           law, but it seems to be a picayune infraction" [syn: {fiddling},
            {footling}, {lilliputian}, {little}, {Mickey Mouse}, {niggling},
            {piddling}, {piffling}, {petty}, {trivial}]