Definition of gregg:
(n) :
A male given name transferred from the surname.
(n) :
A diminutive of the male given name Gregory.
(n) :
A surname originating as a patronymic derived from Gregory and Gregor.
(n) :
A place name in the United States:
(n) :
An unincorporated community in Madera County, California.
(n) :
A township in Morgan County, Indiana.