posterior >> /pɑˈstɪriər/
Definition: [noun] A person's buttocks.
Example: But if things do fall apart completely, we appear to be fortuitously well prepared for a descent into cannibalism judging by the plethora of plump posteriors wandering the malls.
Definition: [adjective] Further back in position; of or nearer the rear or hind end, especially of the body or a part of it.
Example: the posterior part of the gut
Definition: [adjective] Coming after in time or order; later.
Example: a date posterior to the first Reform Bill