jpdb beta

neckline (of dress, etc.)

counter sinking (making conical depression so screw-heads don't protrude above surface); spot facing (machining a flat space for bolt head, etc.); spotfacing; hollowing out (e.g. wooden chair seat, scallop pattern on roof, etc.)

sleeve-hole; armhole

boring

boring machine

leg opening (in panties, swimsuits, etc.)