'Go-between' definitions:

Definition of 'go-between'

(from WordNet)
noun
A negotiator who acts as a link between parties [syn: mediator, go-between, intermediator, intermediary, intercessor]

Definition of 'Go-between'

From: GCIDE
  • Go-between \Go"-be*tween`\, n. A negotiator who acts as a link between parties; an intermediate agent; a broker; a procurer; -- sometimes in a disparaging sense. --Shak.
  • Syn: mediator, intermediator, intermediary. [1913 Webster + WordNet 1.5]