Manipulate

verb

1. To move, arrange or operate something using the hands
2. To influence, manage, direct, control or tamper with something
3. To handle and move a body part, either as an examination or for a therapeutic purpose
4. To influence or control someone in order to achieve a specific purpose, especially one that is unknown to the one being manipulated and beneficial to the manipulator; to use
5. To use the hands, especially in scientific experiments.