Dictionary.net

• si-k[=a]'ni-an, adj. pertaining to the Sicanians, an aboriginal pre-Aryan race in Sicily.

1908 - Chambers's Twentieth Century Dictionary of the English Language
By Thomas Davidson

• Aboriginal inhabitant of Sicily (cf. Sicel, Siceliot, Sicilian); (adj.) of the Ss. [Latin]

1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry