If you fling something somewhere, you throw it there using a lot of force. The woman flung the cup at him He once seized my knitting, flinging it across the room
If you fling someone to the ground, you push them very roughly so that they fall over. The youth got him by the front of his shirt and flung him to the ground
If you fling a part of your body in a particular direction, especially your arms or head, you move it there suddenly. She flung her arms around my neck and kissed me. = throw