\Notch"ing\, n.
1. The act of making notches; the act of cutting into small
   hollows.
2. The small hollow, or hollows, cut; a notch or notches.
3. (Carp.) A method of joining timbers, scantling, etc., by
   notching them, as at the ends, and overlapping or
   interlocking the notched portions.
4. (Engin.) A method of excavating, as in a bank, by a series
   of cuttings side by side. See also {Gulleting}.