[pic.a.yune] n [Prov picaioun, a small coin, fr. picaio money, fr. pica to jingle, of imit. origin] (1804) 1 a: a Spanish half real piece formerly current in the South b: half dime
2: something trivial
[2]picayune adj (1836): of little value: paltry; also: petty, small-minded -- pic.a.yun.ish adj