Curving edge (3)
I believe the answer is:
rim
(Other definitions for rim that I've seen before include "Flange" , "Top edge" , "An edge, canyon or cup" , "Edge, border" , "'Brim, lip (3)'" .)
I believe the answer is:
rim
(Other definitions for rim that I've seen before include "Flange" , "Top edge" , "An edge, canyon or cup" , "Edge, border" , "'Brim, lip (3)'" .)