lābēcŭla, ae, f. dim. [2. labes],
a slight stain or disgrace, a blemish; opprobrium : alicui aspergere labeculam, Cic. Vatin. 17, 41.
lābēcula ae, f dim.labes, a slight stain, reproach : viro labeculam aspergere. ...
An Elementary Latin Dictionary