Going To The Dentist

I have no  PLURAL NOUN, but I have only one  NOUN. It is a very cool one. Sometimes, I use it  ADVERB to get rid of my sister. I go to  PLACE to use it, and I have  PAST TENSE VERB there in the past. It is in  COUNTRY , and I am afraid of hurting my  BODY PART there. I know this makes  ANY WORD sense...