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 encourage, urge or incite.
To increase the activity of (a catalyst) by changing its surface structure.
To elevate to a higher league.
To raise (someone) to a more important, responsible, or remunerative job or rank.
To move on to a subsequent stage of education.
To advocate or urge on behalf of (something or someone); to attempt to popularize or sell by means of advertising or publicity.
To exchange (a pawn) for a queen or other piece when it reaches the eighth rank.