Definition of big guy in English:

big guy

noun

US
informal
  • 1As a familiar or affectionate form of address to a man or boy.

  • 2Chiefly with the. A boss or leader; a powerful, wealthy, or prominent person. Frequently in figurative context, denoting such people as a class.

  • 3With the. God.

Origin

Early 20th century; earliest use found in The New York Times. From big + guy.

Pronunciation

big guy

/ˈbɪɡ ˌɡʌɪ/