From Wiktionary, the free dictionary
notching
- present participle and gerund of notch
notching (plural notchings)
- A notched mark or pattern.
2003, John Hough, The Last Summer, page 136:She looked up into his face and he into hers, and he saw her light-struck green eyes and the delicate notchings of her crow's feet.
- A method of joining framing-timbers, by halving, scarfing, or caulking.