tail end

noun

1. the time of the last part of something

   noun.time

   Synonyms fag end tail

   Source: WordNet 3.0

2. any projection that resembles the tail of an animal

   noun.shape

   Synonyms tail

   Source: WordNet 3.0

3. the fleshy part of the human body that you sit on

   noun.body

   Synonyms arse ass backside behind bottom bum buns butt buttocks can derriere fanny fundament hind end hindquarters keister nates posterior prat rear rea

   Source: WordNet 3.0