Meaning: Its source is a Gaelic expression meaning "Son."

Nickname For: Mac and Mack

Narrative: This name element appears in Gaelic-derived patronymics (names based on a father's name), such as MacDonald (son of Donald) and MacKay (son of Aodh.) It is a common nickname for people with surnames such as these.

Not only has it evolved into a personal name, it is used as a generic term of address for males, akin to ''buddy'' or ''pal.''