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• mac
  mac

  noun

  fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).
• Mac
  Mac

  noun

  a male given name.
• Mac.
  Mac.

  abbreviation

  Maccabees.
• M.Ac.
  M.Ac.

  abbreviation

  Master of Accountancy.
• Mac-
  Mac-

  a prefix found in many family names of Irish or Scottish Gaelic origin, as MacBride and Macdonald.
• MAC
  MAC

  abbreviation

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

mac

¹ American  

[mak] / mæk /

noun

(often initial capital letter)

1. fellow; bud (a familiar term of address to a man or boy whose name is not known to the speaker).

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mac ² American  

[mak] / mæk /

Or mack

noun

Informal.

1. a mackintosh.

2. McIntosh.

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mac ³ American  

[mak] / mæk /

noun

1. macaroni.

2. macaroni and cheese.

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Mac ⁴ American  

[mak] / mæk /

noun

1. a male given name.

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Mac. ⁵ American  

abbreviation

1. Maccabees.

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M.Ac. ⁶ American  

abbreviation

1. Master of Accountancy.

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Mac- ⁷ American  

Also Mc-,

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

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Mac ¹ British  

/ mæk /

noun

1. an informal term of address to a man

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MAC ² British  

abbreviation

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

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Mac. ³ British  

abbreviation

1. Maccabees (books of the Apocrypha)

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Mac- ⁴ British  

prefix

1. (in surnames of Scottish or Irish Gaelic origin) son of

   MacDonald

   MacNeice

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mac ⁵ British  

/ mæk /

noun

1. informal short for mackintosh mackintosh

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Etymology

Origin of mac¹

First recorded in 1650–60; special use of Mac

Origin of mac²

Shortened form

Origin of mac³

Shortened form

Origin of Mac-⁷

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

Example Sentences

The offerings include returning items, such as a smoky burger and chicken sandwich, plus a new side — mac and cheese.

From MarketWatch • Apr. 29, 2026

If I’m in the cooking mood, I love making comfort food like chicken and rice with cabbage and mac and cheese.

From Los Angeles Times • Apr. 10, 2026

Gather your mac and cheese, your spanakopita triangles, your dumplings, your roasted vegetables in tidy bags.

From Salon • Feb. 12, 2026

Just make the mac and cheese for dinner.

From Slate • Jan. 20, 2026

Maybe they just thought the Thai mac and cheese was so good it needed an armed escort.

From "The Son of Neptune" by Rick Riordan

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