English to English

noun (n)

• the fleshy part of the human body that you sit on(noun.body)

  Example:
  Are you going to sit on your fanny and do nothing?.
  

  Synonym:
  arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end
  

  source: wordnet30
• external female sex organs(noun.body)

  Example:
  In England `fanny' is vulgar slang for female genitals.
  

  Synonym:
  female genital organ, female genitalia, female genitals
  

  source: wordnet30