posterior
1. [ adjective ] (zoology) at or near the hind end in quadrupeds or toward the spine in primates
Related terms: anterior zoology back caudal retral back position
2. [ noun ] the fleshy part of the human body that you sit on
Synonyms: seat ass bottom rear_end tail behind buttocks stern hindquarters fundament hind_end keister bum backside prat rear buns tail_end tooshie tush rump can derriere fanny butt nates arse
Examples:

"he deserves a good kick in the butt" "are you going to sit on your fanny and do nothing?"

Related terms: body_part torso
3. [ noun ] (anatomy,zoology,dentistry) a tooth situated at the back of the mouth
Synonyms: back_tooth
Related terms: tooth
Similar spelling:   posteriority
  Poster
  postern
  posterity
  poster_boy
  posterboard
  poster_girl
  poster_paint
  poster_color
  poster_child
  poster_board
  post_road
  post_horn
  postwar
  posture
  post_horse
  pesterer