The last name of Jack Donaghy, a character on 30 Rock. It is also a common name of large frogs bought in Boston...
Donaghy is a 51 year old GE executive that went to Princeton University and was a member of the Twig and Plums Society.
by Ultimate 30 Rock Fan April 25, 2010
to "Donaghy" a game means to referee, umpire or otherwise offciate a game in the favor of a placed wager or bet.
Wow, the ump is completely trying to Donaghy this game. Did you see that call?
by Jonathan Ainslie August 21, 2007
When you or someone thinks another is conspiring to change the outcome of a game or event.
omg they're trying to pull a Donaghy!!
by Dirtybird August 17, 2007

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