noun:

• reeling by hand (esp. silk); hand filature ［座繰り・坐繰り・座繰・坐繰］

noun / ~する noun:

• counter sinking (making conical depression so screw-heads don't protrude above surface); spot facing (machining a flat space for bolt head, etc.); spotfacing - esp. 座ぐり

noun:

• hollowing out (e.g. wooden chair seat, scallop pattern on roof, etc.) - esp. 座刳り