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mac1

[mak]
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noun (often initial capital letter) Informal.
  1. fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).

Origin of mac1

First recorded in 1650–60; special use of Mac

mac2

or mack

[mak]
noun Informal.
  1. a mackintosh.
  2. McIntosh.

Origin of mac2

shortened form

Mac

[mak]
noun
  1. a male given name.

Mac-

  1. a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.
Also Mc- Mc-, M'-.

Origin of Mac-

< Irish, Scots Gaelic mac son, Old Irish macc; akin to Welsh, Cornish mab

Mac.

  1. Maccabees.

M.Ac.

  1. Master of Accountancy.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for mac

mac

mack

noun
  1. British informal short for mackintosh (def. 1), mackintosh (def. 3)

Mac1

noun
  1. mainly US and Canadian an informal term of address to a man

Word Origin

C20: abstracted from Mac-, prefix of Scottish surnames

MAC

abbreviation for
  1. multiplexed analogue component: a transmission coding system for colour television using satellite broadcasting

Mac.

abbreviation for
  1. Maccabees (books of the Apocrypha)

Mac-

Mc- or M'-

prefix
  1. (in surnames of Scottish or Irish Gaelic origin) son ofMacDonald; MacNeice

Word Origin

from Goidelic mac son of; compare Welsh mab, Cornish mab
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mac

Mac

casual, generic term of address for a man, 1928, from Irish and Gaelic mac, a common element in Scottish and Irish names (literally "son of"); hence used generally from early 19c. for "a Celtic Irishman" (see Mac-).

Mac-

common element in Scottish and Irish names, from Old Celtic *makko-s "son." Cognate root *makwos "son" produced Old Welsh map, Welsh mab, ap "son;" also probably cognate with Old English mago "son, attendant, servant," Old Norse mögr "son," Gothic magus "boy, servant," Old English mægð "maid" (see maiden).

Online Etymology Dictionary, © 2010 Douglas Harper

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