N. Amer. <北美>
- informal petty; worthless〈非正式〉不值钱的, 没有价值的; 无足轻重的, 微不足道的, 无意义的; 琐碎的：
the picayune squabbling of party politicians.
党派政客毫无意义的争论。
1
- a small coin of little value, especially a 5-cent piece价值低微的小硬币（尤指5分硬币）。
1.1
- informal an insignificant person or thing〈非正式〉无足轻重的人; 微不足道的事物。
词源
early 19th cent.: from French picaillon, denoting a Piedmontese copper coin, also used to mean 'cash', from Provençal picaioun, of unknown ultimate origin.