1. verb /tɜːn,tɝn/
a) Of a body, person, etc, to move around an axis through itself.
the Earth turns
turn on the spot
Syn: rotate, spin, twirl, steer, swerve, tack, become, get, go, rebel, revolt, lathe, go bad, go off, sour, spoil, complete
2. noun /tɜːn,tɝn/
a) A change of direction or orientation.
Give the handle a turn, then pull it.
b) A movement of an object about its own axis in one direction that continues until the object returns to its initial orientation.
They took turns playing with the new toy.
Wikipedia foundation.