Meaning of notch

notch

1. an angular or-shaped cut, indentation, or slit in an object, surface, or edge.
2. a cut or nick made in a stick or other object for record, as in keeping a tally.
3. a deep, narrow opening or pass between mountains; gap; defile.
4. a step, degree, or grade: This camera is a notch better than the other.
5. a taphole in a blast furnace: iron notch; cinder notch.

1. to cut or make a notch in.
2. to record by notches: He notched each kill on the stick.
3. to score, as in a game: He notched another win.
4. to move up or down or increase or decrease by notches or degrees: The temperature has notched up another degree.