This word is used to refer to a wandering or vagrant monk who meanders about, perhaps aimlessly, perhaps from one monastery to another. I think it's considered to be a bad thing to be a gyrovague, at least by the established Christian church, for a monk is not as easily subject to disciplinary constraints when wandering about. In Thailand, some Theravada Buddhist monks do not attach themselves to any wat or temple, instead retreating, usually to a jungle or forest, to engage in solitary meditation. The Buddhist hierarchy doesn't like them much either, but it is a venerated canonical practice, so the establishment can't say much about it. These forest monks, as they're sometimes called, travel with only a large umbrella to shelter under at night and a brass bowl to collect alms in.