1. (n.) The last troop; the rear of an army; a rear guard. Also used figuratively.

2. (a. & adv.) At or toward the rear.

a rebours a reculons aft after aftermost afterpart afterpiece against the grain anticlockwise arear ass-backwards astern away back back door back seat back side backward backwards behind breech counterclockwise fro heel hind hind end hind part hinder hindermost hindhand hindhead hindmost hindward hindwards in reverse occiput posterior posteriorly postern rear rear end rearmost rearwards retrad retrograde reverse stern tail tail end tailpiece tailward tailwards to the rear widdershins