What a net might attach to (3)
I believe the answer is:
rim
(Other definitions for rim that I've seen before include "Brink" , "An edge, canyon or cup" , "Brim, edge" , "Top edge" , "Edge or margin" .)
I believe the answer is:
rim
(Other definitions for rim that I've seen before include "Brink" , "An edge, canyon or cup" , "Brim, edge" , "Top edge" , "Edge or margin" .)