noun (n)

• someone who buys large quantities of goods and resells to merchants rather than to the ultimate customers(noun.person)

  Synonym:
  jobber, wholesaler
  

  source: wordnet30
• the performer in the middle of a minstrel line who engages the others in talk(noun.person)

  Synonym:
  interlocutor
  

  source: wordnet30
• a person who is in a position to give you special assistance(noun.person)

  Synonym:
  contact
  

  source: wordnet30
• An agent between two parties; a broker; a go-between; any dealer between the producer and the consumer; in Ireland, one who takes land of the proprietors in large tracts, and then rents it out in small portions to the peasantry.(noun)

  source: webster1913