picayune

1. (especially Louisiana, historical) A small coin of the value of six-and-a-quarter cents; a Spanish coin with a value of half a real; a fippenny bit.LouisianaUSespeciallyhistorical

2. (by extension, archaic) A coin worth five cents (a nickel) or some other low value.USarchaicbroadly

3. (figuratively, informal) A person regarded as unworthy of respect or useless; also, something of very little value; a trifle.Synonyms: absolute zero, also-ran, chopped liver, cipher, crumb, Joe Nobody, little guy, minnowUSfigurativelyinformal

4. (figuratively, informal) An argument, fact, or other issue raised (often intentionally) that distracts from a larger issue or fails to make any difference.USfigurativelyinformal