Notching

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.