A fight or brawl....
i lost a few teeth in that donnybrook last night.
by Conor Taylor January 19, 2004
A fight or ruckus. Usually with a group of people. It is smaller than a brewhaha, but larger than a fight.
"Those two starting to argue and before I knew it, I was in the middle of an oldschool donny brook."
by ...rockstar... June 06, 2007
an inordinately wild fight or contentious dispute; brawl; free-for-all.
The line brawl between the New Jersey Devils and the New York Rangers turned into a pretty good Donnybrook!
by DevilsGirl May 12, 2013