posterior
adjective [ before noun ] uk/pɒsˈtɪə.ri.ər/ us/pɑːˈstɪr.i.ɚ/
anatomy specialized后部的;尾部的
positioned at or towards the back
formal（时间上）稍后的
later in time
Compare: anterior
posterior
noun humorous uk/pɒsˈtɪə.ri.ər/ us/pɑːˈstɪr.i.ɚ/
your posterior 臀部
your bottom
If you would kindly move your posterior just a fraction to the right, I might get by. 如果你能把尊臀向右移一点点，我就能过去了。
Synonyms: behind bottom (BODY PART)tush