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1.
(adj.) often associated with people who possess style and class. gregory peck is a state of being, but must come naturally. one cannot strive to be gregory peck. one just is.
juliet: he looks so classy in his collar shirt and kakis.

kate: yeah, he is so gregory peck.
by periwinkle1996 July 23, 2010
 
2.
A hand drawn bankers draft. A cheque (sometimes rubberised)
Beduth rhyming slang
"That Gregory Peck you gave me the other day bounced you robbing bastard"
by Simon Cowels & Kevin Newman May 24, 2008