serrula

serrŭla, ae, f. dim. [serra],

a small saw : dentata, Cic. Clu. 64, 180: ferrea, Varr. R. R. 1, 50, 2: aliquid ossis serrulā praecidere, Cels. 7, 33: vitem serrulā desecare, Col. Arb. 6, 4: manubriata, Pall. 1, 43, 2.