The idyllic planet of The Paradise Syndrome, where the Preservers settled Native American peoples and an amnesiac Kirk lives for months as the medicine chief Kirok.
Amerind is the name given in production material to the planet seen in the Original Series episode The Paradise Syndrome; it is not spoken on screen. It closely resembles Earth and is home to descendants of several Native American peoples, brought there centuries ago by the mysterious Preservers.
The Preservers left an obelisk containing a deflector able to turn aside the asteroids that regularly threaten the planet. Kirk falls into it, loses his memory and is taken for a god. He marries the priestess Miramanee while the Enterprise tries and fails to deflect an approaching asteroid.
Spock deciphers the obelisk's musical notation and activates the deflector in time. Miramanee, stoned by her own people alongside Kirk, dies of her injuries.