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1.
An advertising executive without any formal advertising experience that leverages madmen stereotypes in a feeble attempt to look the part. A Deignan will often go out of their way to adhere to madmen stereotypes.
Did you see the deignan from that other firm, he was wearing a hot pink and polka dotted tie, what a loser.
by The Deignanator April 04, 2012
 
2.
A close-nit Irish family who loves to drink and party...

Many of which reside in Chicago
He's pulled a Deignan again...He's in the bathroom passed out on the toilate
by Irish Carbomb August 28, 2008