What is "trippers"

Usage examples of "trippers".

Like when he had met the three other Trippers in Chapel Halls for the first time, for example.

Tasmin usually let his first trippers decide who sang what, so long as everyone took equal responsibility.

It was not even that she particularly resented having to spout all that pseudo-religious drivel about the Cascade that some Trippers wanted to hear, the old theosophy of Ushogbo that had served the Cardinals so well during the Great Dying.