What is the offense committed by an officer who corruptly claims and takes, as his fee, money, or other thing of value, that is not due, or more than is due, or before it is due. Abbott called?

extortion — (Law) The offense committed by an officer who corruptly claims and takes, as his fee, money, or other thing of value, that is not due, or more than is due, or before it is due. Abbott. (Webster's 1913.)