rauduscŭlum | rōd- | rūd- (noun N) : ( and ), , dim. raudus.
* A little piece of brass used as a coin (an old word): in mancipando cum dicitur: Rudusculo libram ferito, asse tangitur libra, Fest. s. v. rodus, p. 265 Müll.; v. raudus.— Hence
* Transf., a small sum of money: de raudusculo Numeriano multum te amo,in regard to that little debt of Numerius,Cic. Att. 7, 2, 7: de raudusculo quod scribis,id. ib. 4, 8, a, § 1.

s. TLL