What does "notching" mean?

Notching: The small hollow, or hollows, cut; a notch or notches.

Additional senses

  1. 2.(Carp.) A method of joining timbers, scantling, etc., by notching them, as at the ends, and overlapping or interlocking the notched portions.
  2. 3.(Engin.) A method of excavating, as in a bank, by a series of cuttings side by side. See also Gulleting.

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