verb:to move or cause to move in a circular direction around an axis or point
She had to turn the key firmly to start the car.
verb:to change in nature, state, form, or color; become
The leaves turn a beautiful red in the autumn.
verb:to move oneself or an object so that it faces a different direction
He turned around to see who was calling his name.
verb:to pass a certain age or time
He will turn forty next month.
verb:to become nauseated or cause to become nauseated
The gruesome scene made my stomach turn.
noun:a change of direction when moving
Take the next left turn at the traffic light.
noun:an opportunity or obligation to do something that comes successively to each of a number of people
It's your turn to wash the dishes tonight.