Nock (?), n. [See Notch.]
1.
A notch.
He took his arrow by the nock.
Chapman.
2. Naut.
The upper fore corner of a boom sail or of a trysail.
© Webster 1913.
Nock, v. t.
To notch; to fit to the string, as an arrow; to string, as a bow.
Chapman.
© Webster 1913.