To make difficult to accomplish; to act as an obstacle; to frustrate.
To delay or impede; to keep back, to prevent.
Of or belonging to that part or end which is in the rear or hind, or which follows.
The buttocks.
To drive forward; to propel an object, to provide an impetus for motion or action.
To urge a person; to press on; to incite to action or motion via intrinsic motivation.