nock
Concise Oxford English Dictionary © 2008 Oxford University Press:
nock/nɒk/
▶noun Archery a notch at either end of a bow or at the end of an arrow, for receiving the bowstring. ▶verb fit (an arrow) to the bowstring.
– origin ME: perh. from MDu. nocke ‘point, tip’.
'nock' also found in these Oxford entries:

