noun (n)

• a person who translates written messages from one language to another(noun.person)

  Synonym:
  transcriber
  

  source: wordnet30
• someone who mediates between speakers of different languages(noun.person)

  Synonym:
  interpreter
  

  source: wordnet30
• a program that translates one programming language into another(noun.communication)

  Synonym:
  translating program
  

  source: wordnet30
• One who translates; esp., one who renders into another language; one who expresses the sense of words in one language by equivalent words in another.(noun)

  source: webster1913