Chártula, chártulæ, pen. cor. Diminut. Cic.A little colle or prece of paper.
Lewis and Short: Latin dictionary
chartŭla, ae, f.dim. [charta], a little paper, a small writing, a bill, Cic. Fam. 7, 18, 2; Gai Inst. 2, 77; Fronto ad Amic. 1, 15; Cod. Th. 8, 2, 2 al.