Final answer:
The notch at the butt end of an arrow is called the nock, which is crucial for holding the arrow in place on the bowstring and ensuring accurate shots in archery.
Step-by-step explanation:
The notch at the butt end of an arrow is called the nock. The nock is a small groove or slot on the back of the arrow that holds it in place on the bowstring. It helps to ensure consistent arrow flight and release. This is a small slit or groove that holds the arrow in place on the string of the bow until the archer releases it. The nock is essential as it helps to keep the arrow steady and provides a consistent launch point for a reliable flight path. In archery, proper engagement of the nock with the bowstring is critical to the accuracy of the shot.