(historical)a former French coin of low value (史)苏(法国旧时的一种低面值硬币) ■[usu. with negative](informal)a very small amount of money (非正式)极少量的钱 he didn't have a sou. 他一文不名。
语源
French, originally as sous (plural), from Old French sout from Latin solidus (see solidus)