endguard

noun
UK /ˈend.ɡɑːd/
US /ˈend.ɡɑːrd/

A person or thing that keeps the end of something safe.

The endguard stood at the back of the line to make sure everyone was safe.


OTHER MEANINGS

2. A protective cap or cover placed on the end of an object.

He put an endguard on the sharp tip of the pole.

3. In sports, a player who defends the end area of the field.

The endguard blocked the runner near the goal line.

4. A device that stops something from going past a limit.

The endguard on the machine stops the belt from slipping off.