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1.
people who are always coming up with ideas of how to get something for nothing, i.e. how to get something out of the store without the alarm going off at the door, always scheming and plotting in criminal types of ways, a slick mofo
My girl Stacy is so criminalistic. She got almost every DVD she owns for free from the store.
by saddgirl August 07, 2009
 
2.
the study of crime scenes
I work in the field of criminalistics
by Athiest Pope June 16, 2006