notchnäCH/nounplural noun: notches1.an indentation or incision on an edge or surface."there was a notch in the end of the arrow for the bowstring"2.NORTH AMERICANa deep, narrow mountain pass.verb3rd person present: notches1.make notches in."notched bamboo sticks"synonyms:nick, cut, score, incise, carve, scratch, slit, gouge, groove, furrow"notch the plank"2.score or achieve (something)."she notched her second major championship"