Definition of turns:
(v) :
To make a non-linear physical movement.
(v) :
(intransitive, of a body, person, etc) To move about an axis through itself.
(v) :
(transitive) To change the direction or orientation of, especially by rotation.
(v) :
(intransitive) To change one's direction of travel.
(v) :
(transitive) To shape (something) symmetrically by rotating it against a stationary cutting tool, as on a lathe.
(v) :
(by extension) To give form to; to shape or mould; to adapt.