1. Of little value or importance; paltry. See synonyms at trivial. 2. Petty; mean.
NOUN:
1. A Spanish-American half-real piece formerly used in parts of the southern United States. 2. A five-cent piece. 3. Something of very little value; a trifle: not worth a picayune.
ETYMOLOGY:
Louisiana French picaillon, small coin, from French, from Provençal picaioun, from picaio, money, perhaps from Old Provençal piquar, to jingle, clink, from Vulgar Latin *piccre, to pierce. See pique.