Definition of mack daddy in English:

mack daddy

Pronunciation /makˈdadi/

noun

US
  • 1slang A successful pimp or criminal, especially one who acts or dresses in a way regarded as (stereotypically) characteristic of such a person; (hence, more generally) any person who acts or dresses in this way.

    In early use as the nickname of the protagonist of an anonymous African-American narrative poem.

  • 2slang A supremely successful, respected, or influential person; specifically a man who is extremely attractive to or sexually successful with women, a playboy.

  • 3slang, figurative A person who or thing which is considered a supreme or model example of something. Usually followed by of.

Origin

1960s. Probably from mack + daddy, in some forms apparently after Mc-.