interpreter in WordNet English dictionary

1. (computer science) a program that translates and executes source language statements one line at a time
   interpreter  interpretive program 
   
2. an advocate who represents someone else's policy or purpose
   "the meeting was attended by spokespersons for all the major organs of government"
   spokesperson  interpreter  representative  voice 
   
3. someone who mediates between speakers of different languages
   interpreter  translator 
   
4. someone who uses art to represent something
   "his paintings reveal a sensitive interpreter of nature"; "she was famous as an interpreter of Shakespearean roles"
   interpreter