Definition of big dog
- Moeller is the defending state champs, so they're the big dog until you knock them off.
- —Rick Wilson, Cincinnati Enquirer, 26 Apr. 2013
- As I sat in front of my computer, … the big dogs in the newsroom came up to me, one by one, offering nuggets of diehard conservative newsroom wisdom and congratulations.
- —Brooke Parkhurst, Belle in the Big Apple: A Novel with Recipes, 2009