1. (n. pl.) The buttocks.

2. (n. pl.) The two anterior of the four lobes on the dorsal side of the midbrain of most mammals; the anterior optic lobes.

3. (n. pl.) The umbones of a bivalve shell.

after after time afterpart afterpiece afterward arrested back back door back of back seat back side back to back backside backward behind the scenes behind time behindhand belatedly below beyond bottom breech butt buttocks by and by can checked croup crupper deep into delayed derriere detained fanny far on following haunches heel heinie hind end hind part hindhead impeded in arrear in arrears in back of in support of in the background in the rear infra late later later than latterly nates next none too soon occiput past posterior postern rear rear end rearward retarded reverse rump set back since slow slowed down stern subsequent to subsequently supporting tail tail end tailpiece tandem tardy