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(in surnames of Scottish or Irish Gaelic origin) son of: MacDonald; MacNeice.
[from Goidelic mac son of; compare Welsh mab, Cornish mab]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a prefix found in family names of Irish or Scottish Gaelic origin.
[< Irish, Scottish Gaelic mac son]
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