primitive ridge

prim·i·tive ridge

one of the paired ridges on either side of the primitive groove.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
We moved back to Primitive Ridge. Aunt Maude moved to Altoona and we lived in her house for a while, then moved to Woodstock.
I went to school in Primitive Ridge past the 7th grade, then I went to J.C-I school at Blocton in 8th and 9th.