noun (1)
\ ˈmak How to pronounce mac (audio) \
variants: or

Definition of mac

 (Entry 1 of 6)



noun (2)

Definition of mac (Entry 2 of 6)

: macaroni commonly used in the compounds mac and cheese and mac 'n' cheese For those tired of seafood—it happens—a homey mac and cheese was the comfort food for the day.— Sam GuginoDear Barbecue Joint: You make amazing mac 'n' cheese … but must you add crumbled bacon?— Julie R. Smith


noun (3)
\ ˈmak How to pronounce Mac (audio) \

Definition of Mac (Entry 3 of 6)

: fellow used informally to address a man whose name is not known

Definition of Mac (Entry 4 of 6)

variants: or Macc

Definition of Mac (Entry 5 of 6)


Definition of MAC (Entry 6 of 6)

military airlift command

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Synonyms for mac

Synonyms: Noun (1)

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Examples of mac in a Sentence

Noun (1) I'm glad the little nipper remembered his mac today, because it's supposed to rain.

First Known Use of mac

Noun (1)

1901, in the meaning defined above

Noun (2)

1920, in the meaning defined above

Noun (3)

circa 1918, in the meaning defined above

History and Etymology for mac

Noun (3)

Mac-, Mc-, patronymic prefix in Scottish and Irish surnames

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Cite this Entry

“Mac.” Dictionary, Merriam-Webster, Accessed 14 May. 2021.

Style: MLA
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More Definitions for mac



English Language Learners Definition of Mac

US, informal + old-fashioned + sometimes impolite used to speak to a man who you do not know

Medical Definition of mac

 (Entry 1 of 2)


Medical Definition of MAC (Entry 2 of 2)

1 maximum allowable concentration
2 Mycobacterium avium complex

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