What is "in-betweener"

Usage examples of "in-betweener".

There was a group working to get the Center on-line, another group sneaking information to Dogin, and even a team of paranoid in-betweeners headed by Security Director Glinka, desperate to determine which of the other teams they should be supporting.

And--being neither senile nor a man with aspirations to sainthood--whenever the opportunity presented itself (with or without my encouragement), I bedded the beautiful ones (although sometimes they bedded me), passed on the ugly ones altogether (not being a greedy man), but allowed myself discourse with the in-betweeners on a fairly regular basis, not being one to look the other way when such things as discourse and other entertainments are freely offered.