Definition from Wiktionary, the free dictionary
Proper noun 
Sicily (plural Sicilies) (see Usage notes below)
- An autonomous region and island of Italy.
Usage notes 
- While the rules of English state that proper nouns ending in y add an s to form their plural (as in Germanys and Marys), Sicily is an exception to this rule, as in The Kingdom of the Two Sicilies.
Derived terms