Notch (?), n. [Akin to nock; cf. OD. nock, OSw. nocka. Cf. Nick a notch.]
1.
A hollow cut in anything; a nick; an indentation.
And on the stick ten equal notches makes.
Swift.
2.
A narrow passage between two elevation; a deep, close pass; a defile; as, the notch of a mountain.
© Webster 1913.
Notch, v. t. [imp. & p. p. Notched (?); p. pr. & vb. n. Notching.]
1.
To cut or make notches in ; to indent; also, to score by notches; as, to notch a stick.
2.
To fit the notch of (an arrow) to the string.
God is all sufferance; here he doth show
No arrow notched, only a stringless bow.
Herrick.
© Webster 1913.