[notch] n [perh. alter. (fr. misdivision of an otch) of (assumed) otch, fr. MF oche] (1577) 1 a: a V-shaped indentation b: a slit made to serve as a record c: a rounded indentation cut into the pages of a book on the edge opposite the spine
2: a deep close pass: gap
3: degree, step -- notched adj
[2]notch vt (1600) 1: to cut or make a notch in
2. a: to mark or record by a notch b: score, achieve--sometimes used with up