
1) British slang for a young man 2) Scouse slang for a tearaway 3) Slang for a miscreant person
Found on
https://www.crosswordclues.com/clue/scally

Scally (also spelled Scully, Skelly, O`Scully, Scullin, Scullane) and `Scalaí` in Irish is a surname of Irish origin. ==Origins== The surname Scally is an anglicized version of the Gaelic `O Scolaidhe`, which means `descendant of the scholar`. It was first found in County Westmeath. The variations of the name were formed when church offici...
Found on
http://en.wikipedia.org/wiki/Scally

Scally is slang for a miscreant person.
Found on
http://www.probertencyclopaedia.com/browse/ZS.HTM
No exact match found.