1) Rotate as an extremity 2) Turn 3) Turn the palm facing down 
This category refers to people, places, or events concerning the state of Illinois during the American Civil War. ...
• (a.) Somewhat prone; inclined; as, pronate trees.
(pro´nāt) to subject to pronation.
Pro'nate adjective [ Latin pronatus , past participle of pronare to bend forward. See Prone .] Somewhat prone; inclined; as, pronate trees. Kane. 
Type: Term Pronunciation: prō′nāt Definitions: 1. To perform pronation of the forearm or foot. 2. To assume, or to be placed in, a prone position.
[v] - turn the forearm or the hand so that the palm is directed downwards
pronate 1. To turn the hand or forearm so that the palm faces downward. 2. To turn into a prone position; to rotate (the hand or forearm) so that the surface of the palm is downward or toward the back. 3. To turn (the sole of the foot) outward so that the inner edge of the foot bears the weight when standing. 4. To assume or place in a prone pos...
Latin pronatus = bent forwards; hence to pronate = to turn the hand so that the palm faces posteriorly.
To turn palm downward (opposite: supinate).