Dictionary of Medieval Names
from European Sources

Sica f. A short form of any of various names beginning with Old High German sigu 'victory' or possibly Latin sica 'dagger'.

Italy
Latin
996 Sica (nom) skinner
Cite as: J. Uckelman, S.L. Uckelman. "Sica". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Sica.