(slang, figurative) An important or powerful person.
"Thanks, big dog," he said.
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(slang) term of address]] to a male friend.
Hey what's up big dog?
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.